Difference between revisions of "Minoltaflex (I)"

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{{Japanese prewar and wartime 6×6 TLR}}
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{{Japanese prewar and wartime 6×6 TLR
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{{WIP}}
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|image=[http://www.flickr.com/photos/camerawiki/46461542505/in/pool-camerawiki http://farm8.staticflickr.com/7855/46461542505_ebf795e4a5_m_d.jpg]<br>''Picture by eBayer hbpartner. {{with permission}}''
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''See also the [[Minoltaflex Automat]], the [[Minoltaflex wartime prototype]] and the postwar [[Minoltaflex II and III]].''
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''See also the 1941 [[Minoltaflex Automat]], the later [[Minoltaflex Automat prototypes]] and the postwar [[Minoltaflex II and III]].''
  
 
The '''Minoltaflex'''<REF> The camera is referred to in advertising as ミノルタフレックス (''Minorutafurekkusu''), obviously a compound of "Minolta" and "flex". The decision whether to refer to this as "Minoltaflex" or "Minolta Flex" — one word or two — is rather arbitrary. </REF> (ミノルタフレックス, later termed the "Minoltaflex I")<REF> The name "Minoltaflex I" was introduced after 1945, to distinguish the camera from the postwar [[Minoltaflex II and III|Minoltaflex (II), IIB and III]]. </REF> is a 6×6cm [[TLR]] (twin lens reflex) camera for [[120 film]], introduced by Chiyoda Kōgaku (predecessor of [[Minolta]]) in late 1937.
 
The '''Minoltaflex'''<REF> The camera is referred to in advertising as ミノルタフレックス (''Minorutafurekkusu''), obviously a compound of "Minolta" and "flex". The decision whether to refer to this as "Minoltaflex" or "Minolta Flex" — one word or two — is rather arbitrary. </REF> (ミノルタフレックス, later termed the "Minoltaflex I")<REF> The name "Minoltaflex I" was introduced after 1945, to distinguish the camera from the postwar [[Minoltaflex II and III|Minoltaflex (II), IIB and III]]. </REF> is a 6×6cm [[TLR]] (twin lens reflex) camera for [[120 film]], introduced by Chiyoda Kōgaku (predecessor of [[Minolta]]) in late 1937.
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== Second Japanese TLR ==
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The Minoltaflex is often wrongly presented as the first twin-lens reflex camera sold in Japan;<REF> The earliest known occurrence of this mistake is in retrospective accounts published by [[Minolta]]'s predecessor Chiyoda Kōgaku Seikō in {{SK}} September 1958: article by Taniguchi on p.276 and chronology "Hensen kamera ichiran-pyō" on p.295 (the latter is reproduced in [https://flickr.com/photos/camerawiki/32463428377/ this Flickr page by Rebollo_fr]). </REF> it was actually the second, released some months after the [[Prince Flex]] by [[Neumann & Heilemann]]. It is likely that the Minoltaflex prototypes came first, and it is said that the announce of the [[Prince Flex]] was precipitated by the news that the Minolta camera would be released soon.<REF> Awano, p.3 of {{CCN}} no.114, and Tanimura, p.439 of {{Kokusan}}. </REF> The production of the Prince Flex faced many problems and only a handful were made, whereas the Minoltaflex was almost unmodified during its five-year production, and was a commercial success given the conditions. Various competitors appeared afterwards, the most successful being the [[Lyra Flex]], [[First Reflex]] and [[Rollekonter]].
  
 
== Description ==
 
== Description ==
 
The Minoltaflex is essentially a copy of the [[Rolleicord]]. The front plate is moved back and forth for focusing, driven by a knob on the photographer's right. This knob has a chrome finish with a black top, and is graduated from ∞ down to 0.8m; it runs along a black depth-of-field scale showing indications for 3.5, 8 and 16 apertures.
 
The Minoltaflex is essentially a copy of the [[Rolleicord]]. The front plate is moved back and forth for focusing, driven by a knob on the photographer's right. This knob has a chrome finish with a black top, and is graduated from ∞ down to 0.8m; it runs along a black depth-of-field scale showing indications for 3.5, 8 and 16 apertures.
  
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The film advance is semi-automatic, driven by a knob placed on the photographer's right too, with the same black and chrome finish. This knob automatically stops for each exposure, and there is a small round window for a frame counter at the top of the right-hand side plate. Two buttons are placed next to the advance knob, certainly to unlock the film advance. The position of the first exposure is set via a red window placed under the camera and protected by a sliding cover.
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|| ''Picture by eBayer hbpartner. {{with permission}}''
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|| ''Red window underside. {{with permission}}''
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The film advance is semi-automatic, driven by a knob placed on the photographer's right, with the same black and chrome finish as the focus knob. The advance knob automatically stops for each exposure, and there is a small round window for a frame counter on the same side, at the top. After each exposure, the advance mechanism is manually unlocked by pressing a button placed above the advance knob.<REF> The function of this button is described in Hayashi, p.133 of {{KKS}} no.4. </REF>
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The L-shaped back is hinged at the top and retained by a latch at the bottom; the serial number is inscribed inside. There is an exposure table attached behind the back on most examples; it is written in English, something which is rather surprising for a Japanese camera of the time. The two film flanges placed on the photographer's left are pulled out for film loading, then the position of the first exposure is set via a red window protected by a sliding cover, normally placed under the camera. The exposure counter mechanism is engaged by simultaneously pressing both the advance unlock button and another specific button placed under the advance knob.<REF> Sequence described in Hayashi, p.133 of {{KKS}} no.4. </REF>
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|| ''Viewing hood with ''MTS'' logo. Picture by eBayer hbpartner. {{with permission}}''
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The viewfinder provides automatic parallax correction via a mask on the ground glass screen, which moves back and forth when the focus knob is turned.<REF> Device described in Hayashi, p.133 of {{KKS}} no.4. </REF> The four-fold viewing hood is much inspired by that of the [[Ikoflex|Ikoflex II]]. It contains a large magnifying lens hinged to the front. The middle part of the hood has the shape of a truncated pyramid and can be pushed back, revealing a built-in sportsfinder. The silver nameplate is simply marked ''Minolta''; two different variations are known to exist, with a straight or slanted typeface. The center of the viewing hood has a logo, reading ''MTS'' on the early cameras and ''TIYOKO'' on the late ones.
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|| ''Left: Minolta Anastigmat Nippon 75mm f/3.2 viewing lens no.11616.<br>Right: Promar Anastigmat Nippon 75mm f/3.5 taking lens no.91611 in a [[Crown shutter|Crown II]] shutter (B, 1–300).<br>Pictures by eBayer hbpartner. {{with permission}}''
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|| ''Scheme and description of the Promar lens. {{public domain Japan old}}''
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The camera has a Promar 75mm f/3.5 four-element taking lens, made by Asahi Kōgaku (predecessor of [[Pentax]]),<REF> Made by Asahi: {{Inquiry1943_short}}, lens item Lb39; Lewis, p.182. </REF> the same lens as on the [[Auto Semi Minolta]]; the marking on the rim is ''Promar Anastigmat Nippon'' or ''Promar Nippon''. The viewing lens is a 75mm f/3.2, marked ''Minolta Anastigmat Nippon'' or ''Minolta Nippon'', reportedly made by the Chiyoda company itself, perhaps in the Sakai plant.<REF> Made by Chiyoda: ''Kikan Classic Camera 14'', p.38. The same source says on p.15 that the Sakai plant produced lenses from 1937, and this is also found in Francesch, p.25. </REF> Both lenses take 28.5mm diameter push-on accessories.<REF> 28.5mm: price list by [[Asanuma Shōkai]] dated July 1938, p.3. The close-up lens set sold for the original Minoltaflex is also marked ''28.5'' (see the picture below). </REF>
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The shutter is either an imported [[Compur]] (T, B, 1–300) or a [[Crown shutter|Crown II]] (T, B, 1–300 or B, 1–300) made by [[Minolta|Chiyoda]] itself. It is turned 90 degrees: the speed scale is to the left and the aperture scale is to the right (as seen from the front). On the Compur shutter, the name ''Compur'' is inscribed at the bottom and [[Deckel]]'s ''FD'' logo is at the top. The Crown shutter has the name ''CROWNⅡ–TIYOKO'' inscribed on a small plate screwed to the left, and three metal stripes above and below the lens. The main release lever is on the photographer's right; the cocking lever is at the bottom of the shutter housing, and also acts as a secondary release lever. Double exposure prevention is provided in two ways: the cocking lever cannot move and the main release lever does not go back to its initial position unless the advance knob is turned.<REF> The first feature is mentioned in the catalogue by [[Asanuma Shōkai]] dated July 1938, p.3, the second is mentioned in Hayashi, p.133 of {{KKS}} no.4, and both have been checked on an actual example. </REF>
  
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The L-shaped back is hinged at the top and retained by a latch at the bottom. There are two film flanges on the photographer's left, which are pulled out for film loading.
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The dimensions are 98×100×138mm, and the weight is 900g.<REF> Scheibel, p.23, and ''Kikan Classic Camera 14'', p.38. (Tanaka, p.25 of {{KKS}} no.12, says 98×100×195mm). </REF>
  
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The four-fold viewing hood is much inspired by that of the [[Ikoflex|Ikoflex II]]. It contains a large magnifying hood hinged to the front. The middle part of the hood has the shape of a truncated pyramid and can be pushed back, revealing a built-in sportsfinder.
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== Introduction and commercial life ==
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|| ''Minoltaflex in the July 1938 catalogue and price list by [[Asanuma Shōkai]]. Scan by A.&nbsp;Apra. {{public domain Japan old}}''
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The development of the Minoltaflex was undertaken from 1936 by the [[Minolta|Molta]] company. It reportedly took place in the Amagasaki (尼崎) plant, founded the same year as the subsidiary Nihon Kōgaku Kikai Kenkyūjo, later merged into the main company.<REF name="Kikan 14 p.15"> ''Kikan Classic Camera 14'', p.15. </REF> The development team was led by Kitakaze Kumatarō (北風熊太郎), director of the factory.<REF name="Kikan 14 p.15" /> It is said that the first prototypes were completed in July 1936.<REF> Fifty-year history ''Minolta 50-nen no ayumi'', p.5. </REF>
  
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The silver nameplate is simply marked ''Minolta''; two different variations are known to exist, with a straight or slanted typeface. The center of the viewing hood has a logo, which reads ''MTS'' on the early cameras and ''TIYOKO'' on the late ones.
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The camera was released in late 1937, after the Molta company became Chiyoda Kōgaku Seikō. It was featured and advertised in Japanese magazines dated December 1937,<REF> {{Kokusan}}, p.342. </REF> and it was displayed at the show organized the same month in the Tōkyō Kaikan by [[Minolta|Chiyoda Kōgaku Seikō]] and [[Asanuma Shōkai]] to celebrate new commercial agreements.<REF> Tashima Gizō<!-- or Yoshimi -->, interviewed by Saeki Kakugorō on p.77 of {{KKS}} no.12, says November 1937, but Awano, p.7 of the same magazine, specifies that the show was inaugurated on December 12, 1937. </REF>
  
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The camera has a Promar 75mm f/3.5 four-element taking lens, made by Asahi Kōgaku (predecessor of [[Pentax]]), the same lens as on the [[Auto Semi Minolta]]; the marking on the rim is ''Promar Anastigmat Nippon'' or ''Promar Nippon''. The viewing lens is a 75mm f/3.2, marked ''Minolta Anastigmat Nippon'' or ''Minolta Nippon''. The shutter is either an imported [[Compur]] (T, B, 1–300) or a [[Crown shutter|Crown II]] (B, 1–300) made by [[Minolta|Chiyoda]] itself. The main release lever is on the photographer's right, and is interlocked with the advance mechanism to provide double exposure prevention. The Crown II shutter has a cocking lever at the bottom, which also acts as a secondary release lever. The name ''CROWNⅡ–TIYOKO'' is inscribed on a small crescent-shaped nameplate screwed to the shutter plate, on the left of the lens (as seen from the front); the aperture scale is on the other side.
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Early advertisements show the camera with a [[Compur]] shutter and the ''Minolta'' name in a straight typeface.<REF> Advertisement in {{AR}} December 1937 reproduced in {{Kokusan}}, p.98; advertisement in {{ACA}} January 1938 reproduced in Tanimura, p.15 of {{CCN}} no.118; advertisement in ''[[Asahi Graph]]'', 23 March 1938, formerly reproduced in the [https://web.archive.org/web/20070408022932/http://kyoto.cool.ne.jp/syasinsyuu/index.htm Gochamaze website] (archived). </REF> The advertisement in {{AR}} December 1937, gives no price and presents the camera as "available soon" (近日発売);<REF> Advertisement reproduced in {{Kokusan}}, p.98. </REF> the price of {{yen|245|1938}} was announced in the advertisement published the next month in {{ACA}}.<REF> Advertisement reproduced in Tanimura, p.15 of {{CCN}} no.118. </REF>
  
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== Commercial life ==
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|| ''Minoltaflex in the October 1941 catalogue by [[Asanuma Shōkai]]. {{public domain Japan old}}''
 
|| ''Minoltaflex in the October 1941 catalogue by [[Asanuma Shōkai]]. {{public domain Japan old}}''
 
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The Minoltaflex was developed from mid-1936 by the [[Minolta|Molta]] company, which became Chiyoda Kōgaku Seikō in September 1937.<REF> The fifty-year history ''Minolta 50-nen no ayumi'', p.5, says July 1936 for the first prototypes. </REF> The camera was released in late 1937: it was featured and advertised in the December 1937 issue of {{ACA}},<REF> {{Kokusan}}, p.342. </REF> and it was displayed in the show organized the same month in the Tōkyō Kaikan by [[Minolta|Chiyoda Kōgaku Seikō]] and [[Asanuma Shōkai]] to celebrate their new commercial agreement.<REF> Tashima Gizō<!-- or Yoshimi -->, interviewed by Saeki Kakugorō on p.77 of {{KKS}} no.12, says November 1937, but Awano, p.7 of the same magazine, specifies that the show was inaugurated on December 12, 1937. </REF>
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The July 1938 catalogue by [[Asanuma Shōkai]] mentions the [[Crown shutter|Crown II]] shutter with T setting, but the illustration still shows the version with [[Compur]] shutter and straight typeface; the price is unchanged at {{yen|245|1938}}.<REF> Catalogue by [[Asanuma Shōkai]] dated July 1938, p.4, and corresponding price list, p.3. </REF> In the February 1940 advertisement in {{ACA}}, the pictured camera has the Crown shutter and slanted typeface; the price is given as {{yen|275|1940}}.<REF> Advertisement reproduced in {{Kokusan}}, p.98. </REF> In the official list of set prices published in January 1941, the Minoltaflex is mentioned for ¥252, a unique price set for all the 6×6 TLR models.<REF> {{Kakaku0141_short}}, type 7, section 1. </REF> The price was gradually raised throughout the period, and it appears as {{yen|295|1941}} in the October 1941 catalogue by [[Asanuma Shōkai]] reproduced here.<REF> Catalogue by [[Asanuma Shōkai]] dated October 1941, p.13. </REF> In the latter, the pictured camera still has the ''MTS'' logo on the viewing hood, perhaps because an outdated illustration was used. The Minoltaflex is mentioned in the April 1943 government inquiry on Japanese camera production,<REF> {{Inquiry1943_short}}, item 120. In this document, "Ref" is used instead of "Flex" to name the TLR models, and the name is therefore given as "Minolta Ref" (ミノルタレフ) instead of "Minoltaflex". </REF> and the last reported advertisement is dated September 1943;<REF> The advertisement in ''[[Shashin Bunka]]'' September 1943 is the last one listed in {{Kokusan}}, p.342. </REF> the production was probably stopped around that time.
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It seems that one of the TLR models made by the [[Minolta|Chiyoda]] company was supplied to the military and received an official inventory name. An interview of Tashima Gizō<!-- or Yoshimi --> reports that the civilian "Flex" (probably meaning the original Minoltaflex) was supplied as the "portable camera type 99 or something" (99式だったか何かの手持ち写真機), and thus benefited from the allocation of better materials such as stainless steel or aluminium.<REF> Tashima Gizō<!-- or Yoshimi -->, interviewed by Saeki Kakugorō on p.78 of {{KKS}} no.12. </REF> However Awano suggests instead that the military model was the [[Minoltaflex Automat]].<REF> Awano, p.17 of {{KKS}} no.12. </REF>
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{{br}}
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== Variations on actual examples ==
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|| ''Minoltaflex, [[Compur]] shutter (T, B, 1–300), straight typeface.<br>From the July 1938 catalogue by [[Asanuma Shōkai]]. {{public domain Japan old}}''
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The early version with the ''Minolta'' name in '''straight typeface''' seems very rare. At least one surviving example is known with the [[Compur]] shutter; its body number is 3186, and both lens numbers are in the 32xx range.<REF> Data reported from a private collection. </REF> Another camera is known with the straight typeface and a [[Crown shutter]], again with four-digit lens numbers.<REF> Example pictured in Francesch, p.86. </REF>
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|| [http://www.flickr.com/photos/camerawiki/46668695254/in/pool-camerawiki http://farm8.staticflickr.com/7851/46668695254_98a017d351_t_d.jpg] [http://www.flickr.com/photos/camerawiki/40414016223/in/pool-camerawiki http://farm8.staticflickr.com/7848/40414016223_c2eaf3dc79_t_d.jpg]
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|| ''Minoltaflex: straight and slanted typeface.''
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All the other cameras have a '''slanted typeface''' for the ''Minolta'' name. None of these has been observed with a [[Compur]] shutter. The import of German shutters certainly stopped in 1937, after the outbreak of war with China, and the stock of [[Compur]] shutters perhaps ran out before the switch to the newer nameplate.
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The early examples with slanted typeface have a [[Crown shutter]] with a '''T setting''', and have four-digit taking and viewing lens numbers (up to the 93xx range).<REF> Example pictured in [https://web.archive.org/web/20090101164053/http://www.eonet.ne.jp/~shintake/sub23nigan.html this page] (archived) of Shintake Shashinkan, example pictured in the [http://www.photoclubalpha.com/useful-and-vital-links/minolta-history-seven-decades/ 70th anniversary Minolta poster], example pictured in {{Kokusan}}, p.13, and examples observed in online auctions. </REF>
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| colspan=2 | ''Minoltaflex no.9425, [[Crown shutter|Crown II]] shutter (B, 1–300), Promar Anastigmat Nippon 75mm f/3.5 taking lens no.91611,<br>Minolta Anastigmat Nippon 75mm f/3.2 viewing lens no.11616, ''MTS'' logo. Pictures by eBayer hbpartner. {{with permission}}''
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All the other known examples have a [[Crown shutter]] with '''no T setting'''. One isolated example has taking lens no.801x1 and viewing lens no.80862; these numbers might correspond to a small batch of lenses produced immediately after the drop of the four-digit sequence.<REF> Example pictured in [http://neco.aki.gs/neco99/neco30/00/minolta/2fl0100.html this page] at Neco's collection. </REF> After that, the numbering of the viewing lens was perhaps reset at 10000; for the taking lens, two isolated numbers are known in the 83xxx and 84xxx range along with an anomalous 10024,<REF> Examples observed in online auctions. </REF> then the sequence jumped to c.89000. The bulk of the observed surviving cameras have body numbers between 8848 and 24073, taking lens numbers between 89913 and 111489, and viewing lens numbers between 10775 and 27516. The three numbering sequences were shared with the [[Minoltaflex Automat]].
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|| ''Viewing hoods of the Minoltaflex no.9425 (''MTS'' logo) and no.22843 (''TIYOKO'' logo).<br>Pictures by eBayer hbpartner. {{with permission}}''
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The ''MTS'' logo present on all the early examples was replaced by the ''TIYOKO'' logo around body no.17000. The lens markings were later switched from ''Promar Anastigmat Nippon'' to ''Promar Nippon'' and from ''Minolta Anastigmat Nippon'' to ''Minolta Nippon''; this certainly occurred simultaneously around taking lens no.106000 and viewing lens no.23000.
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|| ''Lenses of the Minoltaflex no.22843. Left: Minolta Nippon 75mm f/3.2 viewing lens no.27516.<br>Right: Promar Nippon 75mm f/3.5 taking lens no.110967 in [[Crown shutter|Crown II]] shutter (B, 1–300).<br>Pictures by eBayer hbpartner. {{with permission}}''
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The exposure table was removed on the last examples, and the crackled black paint inside the back was replaced by matter black, as shown on the very late example pictured below. At least one other late camera has been observed with the red window moved to the middle of the back and an accessory shoe added to the left-hand side, but these features are probably not original.<REF> Example pictured in [https://kanscamera.ilma.cc/hp2/restore77.html this page] at Kan's Room (taking lens no.107833). </REF>
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|-
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|| [http://www.flickr.com/photos/camerawiki/33507485008/in/pool-camerawiki http://farm8.staticflickr.com/7825/33507485008_492166f5af_m_d.jpg] [http://www.flickr.com/photos/camerawiki/46660529164/in/pool-camerawiki http://farm8.staticflickr.com/7911/46660529164_b3a1a345be_m_d.jpg]
 +
|-
 +
|| ''Minoltaflex no.9425 and no.22843 side by side. Picture by eBayer hbpartner. {{with permission}}''
 +
|}
 +
 
 +
== Accessories ==
 +
{| class="plainlinks floatright" width=370px style="text-align: center;"
 +
|-
 +
|| [http://www.flickr.com/photos/camerawiki/40418269713/in/pool-camerawiki http://farm5.staticflickr.com/4847/40418269713_b5fb2b2da4_m_d.jpg] [http://www.flickr.com/photos/camerawiki/40419738653/in/pool-camerawiki http://farm8.staticflickr.com/7830/40419738653_6e11eb14c5_m_d.jpg]
 +
|-
 +
|| ''Ever-ready case with ''Minolta'' logo, and lens cap. Pictures by eBayer hbpartner. {{with permission}}''
 +
|}
 +
It seems that the camera was supplied with a lens cap only. In the catalogues by [[Asanuma Shōkai]] dated July 1938 and October 1941, the following accessories are offered separately:
 +
* ever-ready case, ¥8 in 1938, ¥14.16 in 1941;
 +
* filter holder with square hood, 28.5mm push-on mount, taking 30mm diameter filters, ¥1.90;
 +
* hood, 28.5mm push-on mount, ¥6;
 +
* filters, ¥5 each, (Y1, Y2, Y3, G1, G2, R1 available in 1938, Y0, G3, O1, O2, R2 added in 1941);
 +
* close-up lens set: No.1 for 40in to 20in and No.2 for 20in to 13in, ¥22 each;
 +
* leather focusing hood, ¥1.20.
 +
 
 +
The ever-ready case is made of brown leather; it has either ''Minoltaflex'' or a ''Minolta'' logo on the front, above the latch. The original double lens cap is black and has no marking.
 +
 
 +
{| class="plainlinks" align="center" style="text-align: center;"
 +
|-
 +
|| [http://www.flickr.com/photos/camerawiki/47332352042/in/pool-camerawiki http://farm8.staticflickr.com/7882/47332352042_4bec02e8a9_m_d.jpg] [http://www.flickr.com/photos/camerawiki/32443557407/in/pool-camerawiki http://farm5.staticflickr.com/4851/32443557407_70f8c85dca_m_d.jpg]
 +
|-
 +
|| ''Ever-ready case with ''Minolta'' logo, and lens cap. Pictures by eBayer hbpartner. {{with permission}}''
 +
|}
 +
 
 +
The dedicated filters are rare; at least one has been observed with a black rim engraved ''Minoltaflex Filter''. The close-up lens set is contained in a small leather case with a ''Minoltaflex'' embossing. It was copied on the Proxar and Rolleipar set of the [[Rolleiflex]], and consists of two identical lenses, inscribed ''28.5'' and ''P.X–No.1'' or ''P.X–No.2'', and one parallax correction device for the viewing lens, inscribed ''Minolta Flex'' and ''Ro–P.X–No.1'' or ''Ro–P.X–No.2''.
 +
 
 +
== Production estimate ==
 +
{| class="plainlinks floatright" width=120px style="text-align: center;"
 +
|-
 +
|| [http://www.flickr.com/photos/camerawiki/46470134465/in/pool-camerawiki http://farm8.staticflickr.com/7846/46470134465_bbfb254ffe_t_d.jpg]
 +
|-
 +
|| ''Serial number inside the back. {{with permission}}''
 +
|}
 +
The Minoltaflex was made in the Amagasaki (尼崎) plant (which produced the [[bakelite]] and TLR models) at a rate of about 300–350 units per month.<REF> Mukogawa plant: Awano, p.7 of {{KKS}} no.12. Monthly production: Tashima Gizō<!-- or Yoshimi -->, interviewed by Saeki Kakugorō on p.78 of {{KKS}} no.12. </REF>
  
−
The first advertisement in {{ACA}} December 1937 mentions a [[Compur]] shutter (T, B, 1–300) and shows the camera with the ''Minolta'' name in a straight typeface; no price is indicated.<REF> Advertisement reproduced in {{Kokusan}}, p.98. </REF> The advertisement published the next month in the same magazine gives the price of {{yen|245|1938}}.<REF> Advertisement reproduced in Tanimura, p.15 of {{CCN}} no.118. </REF> It is said that the [[Crown shutter|Crown II]] shutter appeared in the advertisements in September 1938.<REF> {{Kokusan}}, p.342. </REF> The February 1940 advertisement in {{ACA}} gives the price of {{yen|275|1940}}; the pictured camera still has the ''MTS'' logo on the viewing hood.<REF> Advertisement reproduced in {{Kokusan}}, p.98. </REF>
+
It is difficult to give a precise estimate of the total production, because the numbering sequence was common to the Minoltaflex and [[Minoltaflex Automat]]. From the known serial numbers, it seems certain that less than 25,000 were made of these two models; for the original Minoltaflex alone, we can attempt a rough estimate of 12,000 to 15,000 units, which is consistent with the monthly rate told above.
  
 
== Notes ==
 
== Notes ==
Line 33: Line 173:
  
 
== Bibliography ==
 
== Bibliography ==
 +
=== Original documents ===
 +
* [[Asanuma Shōkai]]. ''Cameras — All other apparatus and materials — 1938.'' Catalogue dated July 1938, p.4, and corresponding price list, p.3. Documents partly reproduced in [https://www.flickr.com/photos/camerawiki/albums/72157712032980142/ this Flickr album] by Rebollo_fr.
 +
* [[Asanuma Shōkai]]. ''Shashinki to zairyō'' (写真機と材料, Cameras and supplies). Catalogue dated October 1941, p.13. Document partly reproduced in [https://www.flickr.com/photos/camerawiki/albums/72157712024892752/ this Flickr album] by Rebollo_fr.
 +
* {{Inquiry1943}} Item 120.
 +
* {{Kakaku0141}} Type 7, section 1.
 +
 +
=== Official historical accounts ===
 +
* [[Minolta|Minolta Camera]]. ''Minolta 50-nen no ayumi'' (Minolta・50年のあゆみ, Minolta 50-year history). November 1978. Pp.5–6 and 65.
 +
* {{SK}} no.77 (September 1958). "Hensen kamera ichiran-pyō" (変遷カメラ一らん表, Table of camera evolution.) P.295. (This is a chronology of Minolta cameras from the Nifcarette onwards. This document is reproduced in [https://flickr.com/photos/camerawiki/32463428377/ this Flickr page by Rebollo_fr].)
 +
* Taniguchi Masao (谷口匡男), from the commercial department (営業部) of [[Minolta|Chiyoda Kōgaku Seikō]]. "Minoruta kamera no sakujitsu, konnichi" (ミノルタ・カメラの昨日、今日, Minolta cameras, yesterday and today). In {{SK}} no.77 (September 1958). Pp.275–9. (The two first pages of this document, on pre-1937 cameras, are also reproduced in Tanimura, p.8 of {{CCN}} no.116.)
 +
 +
=== Recent sources ===
 
* {{Showa10}} Item 279. (See also on pp.13 and 439.)
 
* {{Showa10}} Item 279. (See also on pp.13 and 439.)
 
* Awano Mikio (粟野幹男). "Minoruta ryakushi" (ミノルタ略史, Minolta short history). {{KKS012}} Pp.6–8.
 
* Awano Mikio (粟野幹男). "Minoruta ryakushi" (ミノルタ略史, Minolta short history). {{KKS012}} Pp.6–8.
Line 40: Line 192:
 
* {{Francesch Minolta}} Pp.24–5 and 86–7.
 
* {{Francesch Minolta}} Pp.24–5 and 86–7.
 
* Hagiya Takeshi (萩谷剛). "Kōkoku ni miru Minoruta kamera no rekishi" (広告に見るミノルタカメラの歴史, "Minolta camera history seen through the advertisements"). {{KKS012}} Pp.9–12.
 
* Hagiya Takeshi (萩谷剛). "Kōkoku ni miru Minoruta kamera no rekishi" (広告に見るミノルタカメラの歴史, "Minolta camera history seen through the advertisements"). {{KKS012}} Pp.9–12.
 +
* Hayashi Teruaki (林輝昭). "Wagakuni ni-gan-refu no sutandādo Minorutafurekkusu" (わが国二眼レフのスタンダードミノルタフレックス, The Minoltaflex, our country's standard TLR). {{KKS004}} Pp.133–5.
 
* {{Jhistcam}}
 
* {{Jhistcam}}
−
* {{Lewis}} P.39 (brief mention only).
+
* {{Kikan14}} Pp.15 and 38–9.
 +
* {{Lewis}} Pp.39 and 54.
 
* {{McKeown12}} P.681.
 
* {{McKeown12}} P.681.
−
* [[Minolta|Minolta Camera]]. ''Minolta 50-nen no ayumi'' (Minolta・50年のあゆみ, Minolta 50-year history). November 1978. Pp.5–6 and 65.
 
 
* Saeki Kakugorō (佐伯恪五郎). "Tashima Gizō<!-- or Yoshimi -->-shi ni kiku" (田嶋義三氏に聞く, "Asking Tashima Gizō<!-- or Yoshimi -->"). {{KKS012}} Pp.76–9.
 
* Saeki Kakugorō (佐伯恪五郎). "Tashima Gizō<!-- or Yoshimi -->-shi ni kiku" (田嶋義三氏に聞く, "Asking Tashima Gizō<!-- or Yoshimi -->"). {{KKS012}} Pp.76–9.
 
* {{Scheibel}} Pp.22–3.
 
* {{Scheibel}} Pp.22–3.
−
* {{SK}} no.77 (September 1958). "Hensen kamera ichiran-pyō" (変遷カメラ一らん表, Table of camera evolution.) P.295. (This is a chronology of Minolta cameras from the Nifcarette onwards. This document is also reproduced in Tanimura, p.7 of {{CCN}} no.116.)
 
 
* {{Zukan}} Item 2013.
 
* {{Zukan}} Item 2013.
 
* Tanaka Masao (田中政雄). "Minolta Camera: nigan-refu kamera" (Minolta Camera: 二眼レフカメラ, Minolta TLR cameras). {{KKS012}} Pp.25–30.
 
* Tanaka Masao (田中政雄). "Minolta Camera: nigan-refu kamera" (Minolta Camera: 二眼レフカメラ, Minolta TLR cameras). {{KKS012}} Pp.25–30.
−
* Taniguchi Masao (谷口匡男), from the commercial department (営業部) of [[Minolta|Chiyoda Kōgaku Seikō]]. "Minoruta kamera no sakujitsu, konnichi" (ミノルタ・カメラの昨日、今日, Minolta cameras, yesterday and today). In {{SK}} no.77 (September 1958). Pp.275–9. (The two first pages of this document, on pre-1937 cameras, are also reproduced in Tanimura, p.8 of {{CCN}} no.116.)
+
* Tanaka Masao (田中政雄). ''Nigan-refu no hanashi (zenpen)'' (二眼レフのはなし[前編], TLR stories [first part]). Gendai Kamera Shinsho (現代カメラ新書) no.68. Tokyo: Asahi Sonorama, 1980. No ISBN number. Pp.127–9.
 +
* Tanaka Masao (田中政雄). "Nigan-refu no hanashi 2" (二眼レフのはなし2, TLR stories 2). In {{CCN}} no.21 (March 1979). Nishinomiya: Camera Collectors News-sha. Pp.11–4. (Contains a picture of a Minoltaflex and a few specifications.)
 
* Tanimura Yoshihiko (谷村吉彦). "Semi Minoruta I-gata to II-gata." (セミミノルタⅠ型とⅡ型, "Semi Minolta I and II") In {{CCN}} no.116 (February 1987). Nishinomiya: Camera Collectors News-sha. (Contains a reproduction of the articles in {{SK}} no.77 and no other information on the Minoltaflex.)
 
* Tanimura Yoshihiko (谷村吉彦). "Semi Minoruta I-gata to II-gata." (セミミノルタⅠ型とⅡ型, "Semi Minolta I and II") In {{CCN}} no.116 (February 1987). Nishinomiya: Camera Collectors News-sha. (Contains a reproduction of the articles in {{SK}} no.77 and no other information on the Minoltaflex.)
 
* Tanimura Yoshihiko (谷村吉彦). "Semi Minoruta I-gata to II-gata (sono 2)." (セミミノルタⅠ型とⅡ型(その2), "Semi Minolta I and II (part 2)") In {{CCN}} no.118 (April 1987). Nishinomiya: Camera Collectors News-sha. (Contains a reproduction of an advertisement showing the Auto Minolta, and no other information on the Minoltaflex.)
 
* Tanimura Yoshihiko (谷村吉彦). "Semi Minoruta I-gata to II-gata (sono 2)." (セミミノルタⅠ型とⅡ型(その2), "Semi Minolta I and II (part 2)") In {{CCN}} no.118 (April 1987). Nishinomiya: Camera Collectors News-sha. (Contains a reproduction of an advertisement showing the Auto Minolta, and no other information on the Minoltaflex.)
 +
* ''Watakushi no ni-gan-refu kamera-ten'' (私の二眼レフカメラ展, Exhibition of twin lens reflex cameras). Tokyo: JCII Camera Museum, 1992. (Exhibition catalogue, no ISBN number.) P.19.
  
 
== Links ==
 
== Links ==
 +
=== General links ===
 
In English:
 
In English:
 +
* Minoltaflex (I) in the [http://www.photoclubalpha.com/useful-and-vital-links/minolta-history-seven-decades/ 70th anniversary Minolta poster], reproduced at [http://www.photoclubalpha.com/ Photoclub Alpha]
 
* [http://www.tlr-cameras.com/Japanese/Minolta.html Minolta TLR cameras] at [http://www.tlr-cameras.com/ TLR Cameras]
 
* [http://www.tlr-cameras.com/Japanese/Minolta.html Minolta TLR cameras] at [http://www.tlr-cameras.com/ TLR Cameras]
−
* [http://members.aol.com/manualminolta/mintlr.htm Minolta TLR cameras] at [http://members.aol.com/manualminolta/ Minman]
+
 
 
In Japanese:
 
In Japanese:
 +
* [http://www.kenko-tokina.co.jp/konicaminolta/history/minolta/1940/1937.html Minoltaflex (I)] in the [http://www.kenko-tokina.co.jp/konicaminolta/history/index.html Konica Minolta official history site]
 
* [http://www.tlr66.com/klmno/minoltaflex1-main.html Minoltaflex (I)] at [http://www.tlr66.com/ TLR milestone]
 
* [http://www.tlr66.com/klmno/minoltaflex1-main.html Minoltaflex (I)] at [http://www.tlr66.com/ TLR milestone]
 
* [http://neco.aki.gs/neco99/neco30/00/minolta/2fl0100.html Minoltaflex (I)] at [http://neco.aki.gs/neco99/neco30/index.html Neco's camera collection], with more pictures [http://neco.aki.gs/neco99/neco30/00/minolta/2fl0101.html here] and [http://neco.aki.gs/neco99/neco30/00/minolta/2fl0102.html here]
 
* [http://neco.aki.gs/neco99/neco30/00/minolta/2fl0100.html Minoltaflex (I)] at [http://neco.aki.gs/neco99/neco30/index.html Neco's camera collection], with more pictures [http://neco.aki.gs/neco99/neco30/00/minolta/2fl0101.html here] and [http://neco.aki.gs/neco99/neco30/00/minolta/2fl0102.html here]
 
* Minoltaflex (I) among [http://asacame.fc2web.com/hsp12tlr/minoltaflex.htm Minolta TLR cameras] at [http://asacame.fc2web.com/ Asacame]
 
* Minoltaflex (I) among [http://asacame.fc2web.com/hsp12tlr/minoltaflex.htm Minolta TLR cameras] at [http://asacame.fc2web.com/ Asacame]
−
* [http://www.eonet.ne.jp/~shintake/sub23nigan.html#raberu101 Minoltaflex (I)] in the [http://www.eonet.ne.jp/~shintake/sub4.html classic camera section] of [http://www.eonet.ne.jp/~shintake/ Shintake Shashinkan]
 
 
* [http://www.syakazuka.com/datas/20021101.html Minoltaflex (I)] at [http://www.syakazuka.com/index.html www.syakazuka.com]
 
* [http://www.syakazuka.com/datas/20021101.html Minoltaflex (I)] at [http://www.syakazuka.com/index.html www.syakazuka.com]
−
* [http://www.saji.city.tottori.tottori.jp/saji103/tayori/tayori141/special4.htm Minoltaflex (I)] in the website of the [http://www.saji.city.tottori.tottori.jp/saji103/index.htm Saji Observatory]
+
* [http://sts.kahaku.go.jp/sts/detail.php?&no=103310371065 Minoltaflex (I)] in the [http://sts.kahaku.go.jp/sts/set_brws_01.php?id=1033 Camera database] of the [http://sts.kahaku.go.jp/ Center of the History of Japanese Industrial Technology]
−
* [http://sts.kahaku.go.jp/sts/detail.php?&key=103310371065&APage=619 Minoltaflex (I)] in the [http://sts.kahaku.go.jp/sts/set_brws_01.php?id=1033 Camera database] of the [http://sts.kahaku.go.jp/ Center of the History of Japanese Industrial Technology]
+
*[https://kanscamera.ilma.cc/hp2/restore77.html Restoration of a Minoltaflex (I)] at [https://kanscamera.ilma.cc/index.html Kan's Room], with [https://kanscamera.ilma.cc/hp3/photo47.html#minoltafx1 sample pictures]
−
* [http://syasinsyuu.cool.ne.jp/camera/syasinki32.jpg Advertisement for the Minolta range] showing the Minoltaflex, published in the 23 March 1938 issue of ''[[Asahi Graph]]'' and reproduced in the [http://syasinsyuu.cool.ne.jp/camera/syasinki.htm Japanese camera page] and the [http://syasinsyuu.cool.ne.jp/camera/syasinki-c.htm camera company page] of the [http://kyoto.cool.ne.jp/syasinsyuu/index.htm Gochamaze website]
+
 
 +
=== Original documents ===
 +
In Japanese:
 
* Advertisement for the Minoltaflex published in the May 1940 issue of {{ACA}}, reproduced in [http://www.warbirds.jp/heiki/31000.htm this page] of the [http://www2.ttcn.ne.jp/~heikiseikatsu/index.html Heiki Seikatsu website]. It is the fifth advertisement from the top.
 
* Advertisement for the Minoltaflex published in the May 1940 issue of {{ACA}}, reproduced in [http://www.warbirds.jp/heiki/31000.htm this page] of the [http://www2.ttcn.ne.jp/~heikiseikatsu/index.html Heiki Seikatsu website]. It is the fifth advertisement from the top.
  

Latest revision as of 08:40, 8 February 2024

46461542505_ebf795e4a5_m_d.jpg
Picture by eBayer hbpartner. (Image rights)
Japanese 6×6 TLR
Prewar and wartime models (edit)
6×6cm Elmoflex | First Reflex | Kiko Flex | Lyra Flex | Minoltaflex | Minoltaflex Automat | Minoltaflex military prototype | Nōman Flex | Ostenflex | Prince Flex | Ricohflex (original) | Ricohflex B | Rollekonter | Roll-o-Frex | Rorter Ref | Rorterflex | Sakura-flex | Simpuflex | Starflex | Taroflex | Valflex | Yokusanflex
Postwar models and other TLR ->
Pseudo TLR and medium format SLR ->
Other Japanese 6×6, 4.5×6, 3×4 and 4×4 ->

See also the 1941 Minoltaflex Automat, the later Minoltaflex Automat prototypes and the postwar Minoltaflex II and III.

The Minoltaflex[1] (ミノルタフレックス, later termed the "Minoltaflex I")[2] is a 6×6cm TLR (twin lens reflex) camera for 120 film, introduced by Chiyoda Kōgaku (predecessor of Minolta) in late 1937.

Second Japanese TLR

The Minoltaflex is often wrongly presented as the first twin-lens reflex camera sold in Japan;[3] it was actually the second, released some months after the Prince Flex by Neumann & Heilemann. It is likely that the Minoltaflex prototypes came first, and it is said that the announce of the Prince Flex was precipitated by the news that the Minolta camera would be released soon.[4] The production of the Prince Flex faced many problems and only a handful were made, whereas the Minoltaflex was almost unmodified during its five-year production, and was a commercial success given the conditions. Various competitors appeared afterwards, the most successful being the Lyra Flex, First Reflex and Rollekonter.

Description

The Minoltaflex is essentially a copy of the Rolleicord. The front plate is moved back and forth for focusing, driven by a knob on the photographer's right. This knob has a chrome finish with a black top, and is graduated from ∞ down to 0.8m; it runs along a black depth-of-field scale showing indications for 3.5, 8 and 16 apertures.

46461566365_db454e9d80_m_d.jpg
Picture by eBayer hbpartner. (Image rights)
40411117813_19a2caa7e5_t_d.jpg
Red window underside. (Image rights)

The film advance is semi-automatic, driven by a knob placed on the photographer's right, with the same black and chrome finish as the focus knob. The advance knob automatically stops for each exposure, and there is a small round window for a frame counter on the same side, at the top. After each exposure, the advance mechanism is manually unlocked by pressing a button placed above the advance knob.[5]

The L-shaped back is hinged at the top and retained by a latch at the bottom; the serial number is inscribed inside. There is an exposure table attached behind the back on most examples; it is written in English, something which is rather surprising for a Japanese camera of the time. The two film flanges placed on the photographer's left are pulled out for film loading, then the position of the first exposure is set via a red window protected by a sliding cover, normally placed under the camera. The exposure counter mechanism is engaged by simultaneously pressing both the advance unlock button and another specific button placed under the advance knob.[6]

46653516524_77f57d4ddb_m_d.jpg
Viewing hood with MTS logo. Picture by eBayer hbpartner. (Image rights)

The viewfinder provides automatic parallax correction via a mask on the ground glass screen, which moves back and forth when the focus knob is turned.[7] The four-fold viewing hood is much inspired by that of the Ikoflex II. It contains a large magnifying lens hinged to the front. The middle part of the hood has the shape of a truncated pyramid and can be pushed back, revealing a built-in sportsfinder. The silver nameplate is simply marked Minolta; two different variations are known to exist, with a straight or slanted typeface. The center of the viewing hood has a logo, reading MTS on the early cameras and TIYOKO on the late ones.

46656364584_3fcce6d044_m_d.jpg 33503239748_c0ccf912ca_m_d.jpg
Left: Minolta Anastigmat Nippon 75mm f/3.2 viewing lens no.11616.
Right: Promar Anastigmat Nippon 75mm f/3.5 taking lens no.91611 in a Crown II shutter (B, 1–300).
Pictures by eBayer hbpartner. (Image rights)
47335392332_3ab6863522_t_d.jpg
46473205635_a8a94c257f_t_d.jpg
Scheme and description of the Promar lens. (Image rights)

The camera has a Promar 75mm f/3.5 four-element taking lens, made by Asahi Kōgaku (predecessor of Pentax),[8] the same lens as on the Auto Semi Minolta; the marking on the rim is Promar Anastigmat Nippon or Promar Nippon. The viewing lens is a 75mm f/3.2, marked Minolta Anastigmat Nippon or Minolta Nippon, reportedly made by the Chiyoda company itself, perhaps in the Sakai plant.[9] Both lenses take 28.5mm diameter push-on accessories.[10]

The shutter is either an imported Compur (T, B, 1–300) or a Crown II (T, B, 1–300 or B, 1–300) made by Chiyoda itself. It is turned 90 degrees: the speed scale is to the left and the aperture scale is to the right (as seen from the front). On the Compur shutter, the name Compur is inscribed at the bottom and Deckel's FD logo is at the top. The Crown shutter has the name CROWNⅡ–TIYOKO inscribed on a small plate screwed to the left, and three metal stripes above and below the lens. The main release lever is on the photographer's right; the cocking lever is at the bottom of the shutter housing, and also acts as a secondary release lever. Double exposure prevention is provided in two ways: the cocking lever cannot move and the main release lever does not go back to its initial position unless the advance knob is turned.[11]

The dimensions are 98×100×138mm, and the weight is 900g.[12]

Introduction and commercial life

40426311293_4e7404959f_m_d.jpg
Minoltaflex in the July 1938 catalogue and price list by Asanuma Shōkai. Scan by A. Apra. (Image rights)

The development of the Minoltaflex was undertaken from 1936 by the Molta company. It reportedly took place in the Amagasaki (尼崎) plant, founded the same year as the subsidiary Nihon Kōgaku Kikai Kenkyūjo, later merged into the main company.[13] The development team was led by Kitakaze Kumatarō (北風熊太郎), director of the factory.[13] It is said that the first prototypes were completed in July 1936.[14]

The camera was released in late 1937, after the Molta company became Chiyoda Kōgaku Seikō. It was featured and advertised in Japanese magazines dated December 1937,[15] and it was displayed at the show organized the same month in the Tōkyō Kaikan by Chiyoda Kōgaku Seikō and Asanuma Shōkai to celebrate new commercial agreements.[16]

Early advertisements show the camera with a Compur shutter and the Minolta name in a straight typeface.[17] The advertisement in Ars Camera December 1937, gives no price and presents the camera as "available soon" (近日発売);[18] the price of ¥245 was announced in the advertisement published the next month in Asahi Camera.[19]

33515806418_85aa217777_m_d.jpg
Minoltaflex in the October 1941 catalogue by Asanuma Shōkai. (Image rights)

The July 1938 catalogue by Asanuma Shōkai mentions the Crown II shutter with T setting, but the illustration still shows the version with Compur shutter and straight typeface; the price is unchanged at ¥245.[20] In the February 1940 advertisement in Asahi Camera, the pictured camera has the Crown shutter and slanted typeface; the price is given as ¥275.[21] In the official list of set prices published in January 1941, the Minoltaflex is mentioned for ¥252, a unique price set for all the 6×6 TLR models.[22] The price was gradually raised throughout the period, and it appears as ¥295 in the October 1941 catalogue by Asanuma Shōkai reproduced here.[23] In the latter, the pictured camera still has the MTS logo on the viewing hood, perhaps because an outdated illustration was used. The Minoltaflex is mentioned in the April 1943 government inquiry on Japanese camera production,[24] and the last reported advertisement is dated September 1943;[25] the production was probably stopped around that time.

It seems that one of the TLR models made by the Chiyoda company was supplied to the military and received an official inventory name. An interview of Tashima Gizō reports that the civilian "Flex" (probably meaning the original Minoltaflex) was supplied as the "portable camera type 99 or something" (99式だったか何かの手持ち写真機), and thus benefited from the allocation of better materials such as stainless steel or aluminium.[26] However Awano suggests instead that the military model was the Minoltaflex Automat.[27]

Variations on actual examples

33515836688_b4d6668f52_m_d.jpg
Minoltaflex, Compur shutter (T, B, 1–300), straight typeface.
From the July 1938 catalogue by Asanuma Shōkai. (Image rights)

The early version with the Minolta name in straight typeface seems very rare. At least one surviving example is known with the Compur shutter; its body number is 3186, and both lens numbers are in the 32xx range.[28] Another camera is known with the straight typeface and a Crown shutter, again with four-digit lens numbers.[29]

46668695254_98a017d351_t_d.jpg 40414016223_c2eaf3dc79_t_d.jpg
Minoltaflex: straight and slanted typeface.

All the other cameras have a slanted typeface for the Minolta name. None of these has been observed with a Compur shutter. The import of German shutters certainly stopped in 1937, after the outbreak of war with China, and the stock of Compur shutters perhaps ran out before the switch to the newer nameplate.

The early examples with slanted typeface have a Crown shutter with a T setting, and have four-digit taking and viewing lens numbers (up to the 93xx range).[30]

46656435494_3802e9da7c_m_d.jpg 40414047393_2f844c1a4f_m_d.jpg 47379463291_8490d9fdc3_m_d.jpg 33503318048_d498979a8d_m_d.jpg 40418162033_5abcdd8169_t_d.jpg
46660429684_65b94b0e5e_t_d.jpg
Minoltaflex no.9425, Crown II shutter (B, 1–300), Promar Anastigmat Nippon 75mm f/3.5 taking lens no.91611,
Minolta Anastigmat Nippon 75mm f/3.2 viewing lens no.11616, MTS logo. Pictures by eBayer hbpartner. (Image rights)

All the other known examples have a Crown shutter with no T setting. One isolated example has taking lens no.801x1 and viewing lens no.80862; these numbers might correspond to a small batch of lenses produced immediately after the drop of the four-digit sequence.[31] After that, the numbering of the viewing lens was perhaps reset at 10000; for the taking lens, two isolated numbers are known in the 83xxx and 84xxx range along with an anomalous 10024,[32] then the sequence jumped to c.89000. The bulk of the observed surviving cameras have body numbers between 8848 and 24073, taking lens numbers between 89913 and 111489, and viewing lens numbers between 10775 and 27516. The three numbering sequences were shared with the Minoltaflex Automat.

32441990077_241d21d73c_m_d.jpg 40418198253_7451d896bd_m_d.jpg
Viewing hoods of the Minoltaflex no.9425 (MTS logo) and no.22843 (TIYOKO logo).
Pictures by eBayer hbpartner. (Image rights)

The MTS logo present on all the early examples was replaced by the TIYOKO logo around body no.17000. The lens markings were later switched from Promar Anastigmat Nippon to Promar Nippon and from Minolta Anastigmat Nippon to Minolta Nippon; this certainly occurred simultaneously around taking lens no.106000 and viewing lens no.23000.

32442018547_dbdf2df747_m_d.jpg 46660492714_6391523e4c_m_d.jpg
Lenses of the Minoltaflex no.22843. Left: Minolta Nippon 75mm f/3.2 viewing lens no.27516.
Right: Promar Nippon 75mm f/3.5 taking lens no.110967 in Crown II shutter (B, 1–300).
Pictures by eBayer hbpartner. (Image rights)

The exposure table was removed on the last examples, and the crackled black paint inside the back was replaced by matter black, as shown on the very late example pictured below. At least one other late camera has been observed with the red window moved to the middle of the back and an accessory shoe added to the left-hand side, but these features are probably not original.[33]

33507485008_492166f5af_m_d.jpg 46660529164_b3a1a345be_m_d.jpg
Minoltaflex no.9425 and no.22843 side by side. Picture by eBayer hbpartner. (Image rights)

Accessories

40418269713_b5fb2b2da4_m_d.jpg 40419738653_6e11eb14c5_m_d.jpg
Ever-ready case with Minolta logo, and lens cap. Pictures by eBayer hbpartner. (Image rights)

It seems that the camera was supplied with a lens cap only. In the catalogues by Asanuma Shōkai dated July 1938 and October 1941, the following accessories are offered separately:

  • ever-ready case, ¥8 in 1938, ¥14.16 in 1941;
  • filter holder with square hood, 28.5mm push-on mount, taking 30mm diameter filters, ¥1.90;
  • hood, 28.5mm push-on mount, ¥6;
  • filters, ¥5 each, (Y1, Y2, Y3, G1, G2, R1 available in 1938, Y0, G3, O1, O2, R2 added in 1941);
  • close-up lens set: No.1 for 40in to 20in and No.2 for 20in to 13in, ¥22 each;
  • leather focusing hood, ¥1.20.

The ever-ready case is made of brown leather; it has either Minoltaflex or a Minolta logo on the front, above the latch. The original double lens cap is black and has no marking.

47332352042_4bec02e8a9_m_d.jpg 32443557407_70f8c85dca_m_d.jpg
Ever-ready case with Minolta logo, and lens cap. Pictures by eBayer hbpartner. (Image rights)

The dedicated filters are rare; at least one has been observed with a black rim engraved Minoltaflex Filter. The close-up lens set is contained in a small leather case with a Minoltaflex embossing. It was copied on the Proxar and Rolleipar set of the Rolleiflex, and consists of two identical lenses, inscribed 28.5 and P.X–No.1 or P.X–No.2, and one parallax correction device for the viewing lens, inscribed Minolta Flex and Ro–P.X–No.1 or Ro–P.X–No.2.

Production estimate

46470134465_bbfb254ffe_t_d.jpg
Serial number inside the back. (Image rights)

The Minoltaflex was made in the Amagasaki (尼崎) plant (which produced the bakelite and TLR models) at a rate of about 300–350 units per month.[34]

It is difficult to give a precise estimate of the total production, because the numbering sequence was common to the Minoltaflex and Minoltaflex Automat. From the known serial numbers, it seems certain that less than 25,000 were made of these two models; for the original Minoltaflex alone, we can attempt a rough estimate of 12,000 to 15,000 units, which is consistent with the monthly rate told above.

Notes

  1. ↑ The camera is referred to in advertising as ミノルタフレックス (Minorutafurekkusu), obviously a compound of "Minolta" and "flex". The decision whether to refer to this as "Minoltaflex" or "Minolta Flex" — one word or two — is rather arbitrary.
  2. ↑ The name "Minoltaflex I" was introduced after 1945, to distinguish the camera from the postwar Minoltaflex (II), IIB and III.
  3. ↑ The earliest known occurrence of this mistake is in retrospective accounts published by Minolta's predecessor Chiyoda Kōgaku Seikō in Shashin Kōgyō September 1958: article by Taniguchi on p.276 and chronology "Hensen kamera ichiran-pyō" on p.295 (the latter is reproduced in this Flickr page by Rebollo_fr).
  4. ↑ Awano, p.3 of Camera Collectors' News no.114, and Tanimura, p.439 of Kokusan kamera no rekishi.
  5. ↑ The function of this button is described in Hayashi, p.133 of Kurashikku Kamera Senka no.4.
  6. ↑ Sequence described in Hayashi, p.133 of Kurashikku Kamera Senka no.4.
  7. ↑ Device described in Hayashi, p.133 of Kurashikku Kamera Senka no.4.
  8. ↑ Made by Asahi: "Kokusan shashinki no genjōchōsa" ("Inquiry into Japanese cameras"), lens item Lb39; Lewis, p.182.
  9. ↑ Made by Chiyoda: Kikan Classic Camera 14, p.38. The same source says on p.15 that the Sakai plant produced lenses from 1937, and this is also found in Francesch, p.25.
  10. ↑ 28.5mm: price list by Asanuma Shōkai dated July 1938, p.3. The close-up lens set sold for the original Minoltaflex is also marked 28.5 (see the picture below).
  11. ↑ The first feature is mentioned in the catalogue by Asanuma Shōkai dated July 1938, p.3, the second is mentioned in Hayashi, p.133 of Kurashikku Kamera Senka no.4, and both have been checked on an actual example.
  12. ↑ Scheibel, p.23, and Kikan Classic Camera 14, p.38. (Tanaka, p.25 of Kurashikku Kamera Senka no.12, says 98×100×195mm).
  13. ↑ 13.0 13.1 Kikan Classic Camera 14, p.15.
  14. ↑ Fifty-year history Minolta 50-nen no ayumi, p.5.
  15. ↑ Kokusan kamera no rekishi, p.342.
  16. ↑ Tashima Gizō, interviewed by Saeki Kakugorō on p.77 of Kurashikku Kamera Senka no.12, says November 1937, but Awano, p.7 of the same magazine, specifies that the show was inaugurated on December 12, 1937.
  17. ↑ Advertisement in Ars Camera December 1937 reproduced in Kokusan kamera no rekishi, p.98; advertisement in Asahi Camera January 1938 reproduced in Tanimura, p.15 of Camera Collectors' News no.118; advertisement in Asahi Graph, 23 March 1938, formerly reproduced in the Gochamaze website (archived).
  18. ↑ Advertisement reproduced in Kokusan kamera no rekishi, p.98.
  19. ↑ Advertisement reproduced in Tanimura, p.15 of Camera Collectors' News no.118.
  20. ↑ Catalogue by Asanuma Shōkai dated July 1938, p.4, and corresponding price list, p.3.
  21. ↑ Advertisement reproduced in Kokusan kamera no rekishi, p.98.
  22. ↑ "Kokusan shashinki no kōtei kakaku", type 7, section 1.
  23. ↑ Catalogue by Asanuma Shōkai dated October 1941, p.13.
  24. ↑ "Kokusan shashinki no genjōchōsa" ("Inquiry into Japanese cameras"), item 120. In this document, "Ref" is used instead of "Flex" to name the TLR models, and the name is therefore given as "Minolta Ref" (ミノルタレフ) instead of "Minoltaflex".
  25. ↑ The advertisement in Shashin Bunka September 1943 is the last one listed in Kokusan kamera no rekishi, p.342.
  26. ↑ Tashima Gizō, interviewed by Saeki Kakugorō on p.78 of Kurashikku Kamera Senka no.12.
  27. ↑ Awano, p.17 of Kurashikku Kamera Senka no.12.
  28. ↑ Data reported from a private collection.
  29. ↑ Example pictured in Francesch, p.86.
  30. ↑ Example pictured in this page (archived) of Shintake Shashinkan, example pictured in the 70th anniversary Minolta poster, example pictured in Kokusan kamera no rekishi, p.13, and examples observed in online auctions.
  31. ↑ Example pictured in this page at Neco's collection.
  32. ↑ Examples observed in online auctions.
  33. ↑ Example pictured in this page at Kan's Room (taking lens no.107833).
  34. ↑ Mukogawa plant: Awano, p.7 of Kurashikku Kamera Senka no.12. Monthly production: Tashima Gizō, interviewed by Saeki Kakugorō on p.78 of Kurashikku Kamera Senka no.12.

Bibliography

Original documents

  • Asanuma Shōkai. Cameras — All other apparatus and materials — 1938. Catalogue dated July 1938, p.4, and corresponding price list, p.3. Documents partly reproduced in this Flickr album by Rebollo_fr.
  • Asanuma Shōkai. Shashinki to zairyō (写真機と材料, Cameras and supplies). Catalogue dated October 1941, p.13. Document partly reproduced in this Flickr album by Rebollo_fr.
  • "Kokusan shashinki no genjōchōsa" (国産写真機ノ現状調査, Inquiry into Japanese cameras), listing Japanese camera production as of April 1943. Reproduced in Supuringu kamera de ikou: Zen 69 kishu no shōkai to tsukaikata (スプリングカメラでいこう: 全69機種の紹介と使い方, Let's try spring cameras: Presentation and use of 69 machines). Tokyo: Shashinkogyo Syuppan-sha, 2004. ISBN 4-87956-072-3. Pp.180–7. Item 120.
  • "Kokusan shashinki no kōtei kakaku" (国産写真機の公定価格, Set prices of the Japanese cameras), listing Japanese camera production as of October 25, 1940 and setting the retail prices from December 10, 1940. Published in Asahi Camera January 1941 and reproduced in Shōwa 10—40nen kōkoku ni miru kokusan kamera no rekishi (昭和10〜40年広告にみる国産カメラの歴史, Japanese camera history as seen in advertisements, 1935—1965). Tokyo: Asahi Shinbunsha, 1994. ISBN 4-02-330312-7. Pp.108—9. Type 7, section 1.

Official historical accounts

  • Minolta Camera. Minolta 50-nen no ayumi (Minolta・50年のあゆみ, Minolta 50-year history). November 1978. Pp.5–6 and 65.
  • Shashin Kōgyō no.77 (September 1958). "Hensen kamera ichiran-pyō" (変遷カメラ一らん表, Table of camera evolution.) P.295. (This is a chronology of Minolta cameras from the Nifcarette onwards. This document is reproduced in this Flickr page by Rebollo_fr.)
  • Taniguchi Masao (谷口匡男), from the commercial department (営業部) of Chiyoda Kōgaku Seikō. "Minoruta kamera no sakujitsu, konnichi" (ミノルタ・カメラの昨日、今日, Minolta cameras, yesterday and today). In Shashin Kōgyō no.77 (September 1958). Pp.275–9. (The two first pages of this document, on pre-1937 cameras, are also reproduced in Tanimura, p.8 of Camera Collectors' News no.116.)

Recent sources

Links

General links

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Original documents

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Nifca, Molta and Chiyoda prewar and wartime cameras (edit)
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