Minoltaflex (I)

See also the Minoltaflex Automat, the Minoltaflex wartime prototype and the postwar Minoltaflex II and III.

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

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.

Picture by eBayer hbpartner. (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.

The L-shaped back is hinged at the top and retained by a latch at the bottom; the serial number is inscribed inside. 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 placed under the camera and protected by a sliding cover. The exposure counter mechanism is engaged by simultaneously pressing both the advance unlock button and another specific button placed under the advance knob.

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. 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.

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. Both lenses take 28.5mm diameter push-on accessories.

Left: Promar Anastigmat Nippon 75mm f/3.5 taking lens no.91611 in a Crown II shutter (B, 1–300), Right: Minolta Anastigmat Nippon 75mm f/3.2 viewing lens no.11616. Pictures by eBayer hbpartner. (Image rights)

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; once tripped, it only comes back to its initial position when the advance knob is turned, thus preventing unwanted double exposures. The cocking lever is at the bottom of the shutter housing; it also acts as a secondary release lever, notably used for voluntary double exposures.

Introduction and commercial life

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

The Minoltaflex was developed from 1936 by the Molta company (which became Chiyoda Kōgaku Seikō in September 1937); it is said that the first prototypes were completed in July 1936. The camera was released in late 1937: it was featured and advertised in Japanese magazines dated December 1937, 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.

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

It is said that the version with Crown II shutter was first advertised in September 1938. In the February 1940 advertisement in Asahi Camera, the pictured camera has the Crown shutter and slanted typeface, and still has the MTS logo on the viewing hood; the price is given as ¥275. 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. The price was gradually raised throughout the period, and it appears as ¥295 in the October 1941 catalogue by Asanuma Shōkai reproduced here. The Minoltaflex is mentioned in the April 1943 government inquiry on Japanese camera production, and the last reported advertisement is dated September 1943; the production was probably stopped around that time.

Variations on actual examples

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

All the other cameras have the 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 lens numbers (up to the 92xx range).

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. After that, the numbering of the viewing lens was certainly reset at c.10000; for the taking lens, two isolated numbers are known in the 83xxx and 84xxx range, 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.

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 (around taking lens no.106000) and from Minolta Anastigmat Nippon to Minolta Nippon (around viewing lens no.23000).

Accessories

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

The October 1941 catalogue of Asanuma Shōkai reproduced above shows the following list of accessories:

• ever-ready case, ¥14.16;
• filter holder with square hood, for 30mm diameter filters, ¥1.90;
• hood, ¥6;
• filter, Y0, Y1, Y2, Y3, G1, G2, G3, O1, O2, R1, R2, ¥5 each;
• close-up lens set, 40in to 20in or 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.

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

The close-up lens set is contained in a small leather case with a Minoltaflex embossing. It is 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

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.

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.

Bibliography

• Asahi Camera (アサヒカメラ) editorial staff. 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. Item 279. (See also on pp.13 and 439.)
• 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.
• Awano Mikio (粟野幹男). "Minoruta ryakushi" (ミノルタ略史, Minolta short history). Kamera Rebyū: Kurashikku Kamera Senka (カメラレビュー クラシックカメラ専科) / Camera Review: All about Historical Cameras no.12, October 1988. No ISBN number. Minoruta kamera no subete (ミノルタカメラのすべて, special issue on Minolta). Pp.6–8.
• Awano Mikio (粟野幹男). "Senzen no Minoruta kamera" (戦前のミノルタカメラ, Prewar Minolta cameras). Kamera Rebyū: Kurashikku Kamera Senka (カメラレビュー クラシックカメラ専科) / Camera Review: All about Historical Cameras no.12, October 1988. No ISBN number. Minoruta kamera no subete (ミノルタカメラのすべて, special issue on Minolta). Pp.13–7.
• Baird, John R. The Japanese Camera. Yakima, WA: Historical Camera Publications, 1990. ISBN 1-879561-02-6. Pp.38 and 42.
• Eimukku 735, Manyuaru Kamera Shirīzu 15 (エイムック735・マニュアルカメラシリーズ15). Minolta: Minoruta kamera no subete (Minolta:ミノルタカメラのすべて, Minolta: all of Minolta cameras). Tokyo: Ei Shuppansha, 2003. ISBN 4-87099-923-4. "Minoruta nigan-refu no yūwaku" (ミノルタ二眼レフの誘惑", Seduction of Minolta TLR cameras). Pp.135–6.
• Francesch, Dominique and Jean-Paul. Histoire de l'appareil photographique Minolta de 1929 à 1985. Paris: Dessain et Tolra, 1985. ISBN 2-249-27685-4. 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"). Kamera Rebyū: Kurashikku Kamera Senka (カメラレビュー クラシックカメラ専科) / Camera Review: All about Historical Cameras no.12, October 1988. No ISBN number. Minoruta kamera no subete (ミノルタカメラのすべて, special issue on Minolta). 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). Kamera Rebyū: Kurashikku Kamera Senka (カメラレビュー クラシックカメラ専科) / Camera Review: All about Historical Cameras no.4, March 1984. No ISBN number. Meiki no keifu (名機の系譜, special issue on famous camera families). Pp.133–5.
• The Japanese Historical Camera. 2nd ed. Tokyo: JCII Camera Museum, 2004.
• "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.
• Lewis, Gordon, ed. The History of the Japanese Camera. Rochester, N.Y.: George Eastman House, International Museum of Photography & Film, 1991. ISBN 0-935398-17-1 (paper), 0-935398-16-3 (hard). Pp.39 and 54.
• McKeown, James M. and Joan C. McKeown's Price Guide to Antique and Classic Cameras, 12th Edition, 2005-2006. USA, Centennial Photo Service, 2004. ISBN 0-931838-40-1 (hardcover). ISBN 0-931838-41-X (softcover). P.681.
• 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-shi ni kiku" (田嶋義三氏に聞く, "Asking Tashima Gizō"). Kamera Rebyū: Kurashikku Kamera Senka (カメラレビュー クラシックカメラ専科) / Camera Review: All about Historical Cameras no.12, October 1988. No ISBN number. Minoruta kamera no subete (ミノルタカメラのすべて, special issue on Minolta). Pp.76–9.
• Scheibel, Anni Rita and Joseph. 70 Jahre Minolta Kameratechnik — Von der Nifcalette bis zur Dynax 9. Stuttgart: Lindemanns Verlag, 3rd edition, 1999. ISBN 3-89506-191-3. Pp.22–3.
• 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 also reproduced in Tanimura, p.7 of Camera Collectors' News no.116.)
• Sugiyama, Kōichi (杉山浩一); Naoi, Hiroaki (直井浩明); Bullock, John R. The Collector's Guide to Japanese Cameras. 国産カメラ図鑑 (Kokusan kamera zukan). Tokyo: Asahi Sonorama, 1985. ISBN 4-257-03187-5. 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). Kamera Rebyū: Kurashikku Kamera Senka (カメラレビュー クラシックカメラ専科) / Camera Review: All about Historical Cameras no.12, October 1988. No ISBN number. Minoruta kamera no subete (ミノルタカメラのすべて, special issue on Minolta). Pp.25–30.
• 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.)
• 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 Camera Collectors' News no.116 (February 1987). Nishinomiya: Camera Collectors News-sha. (Contains a reproduction of the articles in Shashin Kōgyō 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 Camera Collectors' News 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

In English:

• Minoltaflex (I) in the 70th anniversary Minolta poster, reproduced at Photoclub Alpha
• Minolta TLR cameras at TLR Cameras
• Minolta TLR cameras at Minman

In Japanese:

• Minoltaflex (I) at TLR milestone
• Minoltaflex (I) at Neco's camera collection, with more pictures here and here
• Minoltaflex (I) among Minolta TLR cameras at Asacame
• Minoltaflex (I) in the classic camera section of Shintake Shashinkan
• Minoltaflex (I) at www.syakazuka.com
• Minoltaflex (I) in the website of the Saji Observatory
• Minoltaflex (I) in the Camera database of the Center of the History of Japanese Industrial Technology
• Advertisement for the Minolta range showing the Minoltaflex, published in the 23 March 1938 issue of Asahi Graph and reproduced in the Japanese camera page and the camera company page of the Gochamaze website
• Advertisement for the Minoltaflex published in the May 1940 issue of Asahi Camera, reproduced in this page of the Heiki Seikatsu website. It is the fifth advertisement from the top.