Difference between revisions of "Koilos"
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|| ''Koilos shutter on a [[Nifca and Molta plate folders|Lomax]]. Picture courtesy of eBayer hbpartner. {{with permission}}'' | || ''Koilos shutter on a [[Nifca and Molta plate folders|Lomax]]. Picture courtesy of eBayer hbpartner. {{with permission}}'' | ||
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| − | Various Japanese cameras of the early 1930s are equipped with a different Koilos shutter. This Koilos shutter is | + | Various Japanese cameras of the early 1930s are equipped with a different Koilos shutter. This Koilos shutter is [[everset]], and tripped by a lever attached to the front plate. The speeds (25, 50, 100, B, T) are selected by a wheel at the top. There is a thread for a [[cable release]] on the side, and a [[thread and needle release]] under the lens. This Koilos shutter was perhaps made by [[Gauthier]], but this is unclear. |
The Koilos shutter mounted on the [[Nifca-Dox]] by Nichidoku (predecessor of [[Minolta]]) has a peculiar octagonal casing and slightly different controls. It was perhaps not a genuine imported shutter, and at least one source says that it was "clearly made by the company itself".<REF> Awano, p.14 of {{KKS}} no.12: シャッターもコイロス名ではあるが、明らかに自社製と思われるものを取り付け. </REF> | The Koilos shutter mounted on the [[Nifca-Dox]] by Nichidoku (predecessor of [[Minolta]]) has a peculiar octagonal casing and slightly different controls. It was perhaps not a genuine imported shutter, and at least one source says that it was "clearly made by the company itself".<REF> Awano, p.14 of {{KKS}} no.12: シャッターもコイロス名ではあるが、明らかに自社製と思われるものを取り付け. </REF> | ||
Revision as of 13:37, 12 February 2009
Contents
Early Koilos
The Koilos is a German three-leaf shutter. It was the first leaf shutter developed by Gauthier, introduced in 1904. It needed cocking and used a leather brake to regulate speeds.
Cameras equipped
- Murer's Express
- Pocket Idea A1 (1911)
- Lily (1909–11)
- Noble
- Pearl No.4 (1911)
Later Koilos
|
| Koilos shutter on a Lomax. Picture courtesy of eBayer hbpartner. (Image rights) |
Various Japanese cameras of the early 1930s are equipped with a different Koilos shutter. This Koilos shutter is everset, and tripped by a lever attached to the front plate. The speeds (25, 50, 100, B, T) are selected by a wheel at the top. There is a thread for a cable release on the side, and a thread and needle release under the lens. This Koilos shutter was perhaps made by Gauthier, but this is unclear.
The Koilos shutter mounted on the Nifca-Dox by Nichidoku (predecessor of Minolta) has a peculiar octagonal casing and slightly different controls. It was perhaps not a genuine imported shutter, and at least one source says that it was "clearly made by the company itself".[1]
Cameras equipped
The fact that a camera is listed here does not imply that all its versions were equipped with a Koilos shutter:
- Idea (isolated example)
- Nifcarette and Sirius Bebe
- Nifca-Dox
- Sirius and Lomax
- Super and Special Super
- Tokiwa
- Weha
Notes
- ↑ Awano, p.14 of Kurashikku Kamera Senka no.12: シャッターもコイロス名ではあるが、明らかに自社製と思われるものを取り付け.
Bibliography
- 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.13–17.
Links
In English:
- Shutters - History and Use, an article by Ernest Purdum at largeformatphotography.info with erroneous mentioning of Kenngott as the shutter's maker
In Japanese:
- Unknown plate folder with a Koilos shutter and a Heliostar lens, at the Monomono blog
