Difference between revisions of "Durax"
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| − | + | The '''Durax''' (デュラックス) are Japanese [[leaf shutter]]s made by Rokuoh-sha, then by Konishiroku (predecessors of [[Konica]]). | |
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| + | == Zeus and Durax in #0 size == | ||
{| class="plainlinks floatright" width=240px style="text-align:center;" | {| class="plainlinks floatright" width=240px style="text-align:center;" | ||
| − | || [http://www.flickr.com/photos/ | + | || [http://www.flickr.com/photos/camerawiki/39966059143/in/pool-camerawiki/ http://farm5.staticflickr.com/4906/39966059143_b36fc383be_m_d.jpg] |
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| − | || '' | + | || ''Durax, #0 size, on a [[Pearl (6×9 self-erecting)|Year-Eight Pearl]]. {{with permission}}'' |
|} | |} | ||
| − | The '''Durax''' are | + | The large model, in #0 size, was first introduced in 1933 as the '''Zeus''' (ゼウス), a name only known on advertisements for the [[Idea (metal)|Year-Eight Idea]] and [[Pearl (6×9 self-erecting)|Year-Eight Pearl]]. It was quickly renamed '''Durax''', perhaps because the brand name "Zeus" was already registered by someone else. It was copied on the German [[Ibsor]]. |
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| + | The range of speeds is T, B, 125, 50, 25, 10, 5, 2, 1. They are selected on a dial at the top, and the release lever is attached to the front face. The shutter is [[everset]], with no cocking lever. The ''RK'' logo of [[Konica|Rokuoh-sha]] is directly engraved on the front face, and the ''Durax'' name is inscribed on a separate plate with the aperture scale, attached by two screws. There is a thread for a cable release on the side, on a small hole near the logo, for a [[thread and needle release]] (a crude replacement for a self-timer). | ||
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| + | The regular Durax in #0 size was mounted on the following cameras by [[Konica|Rokuoh-sha]] (not all the versions have this shutter): | ||
| + | * [[Idea (metal)|Year-Eight Idea]], from 1933 | ||
| + | * [[Pearl (6×9 self-erecting)|Year-Eight Pearl and Luxury Pearl]], from 1933 | ||
| + | * [[Lily (metal and tropical)|Lily and New Lily]], from 1933 | ||
| + | * [[Ohca]], from 1935 | ||
| − | + | A '''later version''' was mounted by [[Konica|Rokuoh-sha]] in 1939 on the [[Sakura-flex]] TLR prototype. The speeds are set by turning the rim, and the range is slightly extended: T, B, 150, 100, 50, 25, 10, 5, 2, 1. The internals are certainly quite similar to those of the previous version: the position of the release lever and cable release thread is unchanged, and there is no setting lever. The obsolete thread and needle release is replaced by a true self-timer, controlled by a lever placed opposite the release lever and shaped as a scythe. The front face is similar to that of the early Durax in #00 size, mounted on the [[Semi Pearl|silver Semi Pearl]]. | |
| − | The | ||
| − | == | + | It is reported that some #0 Durax were mounted on the [[Elliotte]] 6×6 pseudo TLR, distributed in the early 1950s. Its manufacturer surely re-used old parts disposed of by [[Konica|Konishiroku]]. |
| − | The | + | {{br}} |
| + | |||
| + | == Durax in #00 size == | ||
| + | The Durax was released in #00 size at the beginning of 1938 for the 4.5×6cm [[Semi Pearl]], in combination with a [[Hexar lenses|Hexar lens]]. The speeds are set by turning the rim, and the nominal top speed is slightly slower: 1, 2, 5, 10, 25, 50, 100, B, T. The shutter has a setting lever at the top and a release cam at the bottom, and is suited for cameras with a body release. There is a thread for a cable release on the side, towards the bottom, and no self-timer device. | ||
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| + | {| class="plainlinks" align="center" style="text-align:center;" | ||
| + | | width=240px | [http://www.flickr.com/photos/camerawiki/39914182823/in/pool-camerawiki/ http://farm8.staticflickr.com/7862/39914182823_d3d5e6fa03_m.jpg] | ||
| + | | width=50px | | ||
| + | | width=240px | [http://www.flickr.com/photos/camerawiki/39909667673/in/pool-camerawiki/ http://farm8.staticflickr.com/7836/39909667673_4e48e20536_m.jpg] | ||
| + | |- | ||
| + | || ''Postwar Durax, #00 size, second design, on a [[Semi Pearl]]. Picture by Timothy D. Harrah. {{with permission}}'' | ||
| + | || | ||
| + | || ''Postwar Durax, #00 size, third design, on a [[Semi Pearl]]. Picture by Geoff Cliffe, Melbourne. {{with permission}}'' | ||
| + | |} | ||
| − | + | The production of the original #00 Durax was resumed after 1945. Three different front plate designs are known on the [[Semi Pearl]]. The same shutter was mounted on the [[Pearl (I), II and III|Pearl (I)]] in 1949, with yet another front face. | |
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| − | == | + | == Durax-S, #00 size == |
| − | < | + | The name was re-used on the '''Durax-S''', released in 1955 on the [[Pearl (I), II and III|Pearl IIB]] and certainly having a completely different design. The range of speeds is much extended (B, 1, 2, 5, 10, 25, 50, 100, 200, 400) and flash synchronization was added via a PC connector. (The letter "S" in the name surely stands for <u>S</u>ynchronized.) |
== Links == | == Links == | ||
In Japanese: | In Japanese: | ||
| − | * Advertisement in ''Shashin Geppō'' March 1933 mentioning the Zeus, reproduced at the bottom of [http://www2f.biglobe.ne.jp/~ter-1212/sakura/idea.htm this page] | + | * Advertisement in ''Shashin Geppō'' March 1933 mentioning the Zeus, reproduced at the bottom of [http://www2f.biglobe.ne.jp/~ter-1212/sakura/idea.htm this page on Idea cameras] at [http://www2f.biglobe.ne.jp/~ter-1212/sakura/index.htm R. Konishi Rokuoh-sha] |
| + | * [http://tomshome.sakura.ne.jp/others/konica/pearl1.html Restoration of a Pearl I] at [http://tomshome.sakura.ne.jp/ ME Fukkatsu Ōjō], showing the internals of a #00 Durax | ||
[[Category: Japanese shutters]] | [[Category: Japanese shutters]] | ||
[[Category: Leaf shutters]] | [[Category: Leaf shutters]] | ||
| + | [[Category: Konica]] | ||
Latest revision as of 12:17, 16 February 2019
The Durax (デュラックス) are Japanese leaf shutters made by Rokuoh-sha, then by Konishiroku (predecessors of Konica).
Zeus and Durax in #0 size
|
| Durax, #0 size, on a Year-Eight Pearl. (Image rights) |
The large model, in #0 size, was first introduced in 1933 as the Zeus (ゼウス), a name only known on advertisements for the Year-Eight Idea and Year-Eight Pearl. It was quickly renamed Durax, perhaps because the brand name "Zeus" was already registered by someone else. It was copied on the German Ibsor.
The range of speeds is T, B, 125, 50, 25, 10, 5, 2, 1. They are selected on a dial at the top, and the release lever is attached to the front face. The shutter is everset, with no cocking lever. The RK logo of Rokuoh-sha is directly engraved on the front face, and the Durax name is inscribed on a separate plate with the aperture scale, attached by two screws. There is a thread for a cable release on the side, on a small hole near the logo, for a thread and needle release (a crude replacement for a self-timer).
The regular Durax in #0 size was mounted on the following cameras by Rokuoh-sha (not all the versions have this shutter):
- Year-Eight Idea, from 1933
- Year-Eight Pearl and Luxury Pearl, from 1933
- Lily and New Lily, from 1933
- Ohca, from 1935
A later version was mounted by Rokuoh-sha in 1939 on the Sakura-flex TLR prototype. The speeds are set by turning the rim, and the range is slightly extended: T, B, 150, 100, 50, 25, 10, 5, 2, 1. The internals are certainly quite similar to those of the previous version: the position of the release lever and cable release thread is unchanged, and there is no setting lever. The obsolete thread and needle release is replaced by a true self-timer, controlled by a lever placed opposite the release lever and shaped as a scythe. The front face is similar to that of the early Durax in #00 size, mounted on the silver Semi Pearl.
It is reported that some #0 Durax were mounted on the Elliotte 6×6 pseudo TLR, distributed in the early 1950s. Its manufacturer surely re-used old parts disposed of by Konishiroku.
Durax in #00 size
The Durax was released in #00 size at the beginning of 1938 for the 4.5×6cm Semi Pearl, in combination with a Hexar lens. The speeds are set by turning the rim, and the nominal top speed is slightly slower: 1, 2, 5, 10, 25, 50, 100, B, T. The shutter has a setting lever at the top and a release cam at the bottom, and is suited for cameras with a body release. There is a thread for a cable release on the side, towards the bottom, and no self-timer device.
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| |
| Postwar Durax, #00 size, second design, on a Semi Pearl. Picture by Timothy D. Harrah. (Image rights) | Postwar Durax, #00 size, third design, on a Semi Pearl. Picture by Geoff Cliffe, Melbourne. (Image rights) |
The production of the original #00 Durax was resumed after 1945. Three different front plate designs are known on the Semi Pearl. The same shutter was mounted on the Pearl (I) in 1949, with yet another front face.
Durax-S, #00 size
The name was re-used on the Durax-S, released in 1955 on the Pearl IIB and certainly having a completely different design. The range of speeds is much extended (B, 1, 2, 5, 10, 25, 50, 100, 200, 400) and flash synchronization was added via a PC connector. (The letter "S" in the name surely stands for Synchronized.)
Links
In Japanese:
- Advertisement in Shashin Geppō March 1933 mentioning the Zeus, reproduced at the bottom of this page on Idea cameras at R. Konishi Rokuoh-sha
- Restoration of a Pearl I at ME Fukkatsu Ōjō, showing the internals of a #00 Durax
