Difference between revisions of "Koilos"

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m (Later Koilos: Replaced location of rebollo_fr image due to expected deletion of images on Flickr October 2019, rebollo_fr/363887173)
 
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== Early Koilos ==
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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.
[http://www.flickr.com/photos/rebollo_fr/363887173/in/pool-camerapedia/ http://farm1.static.flickr.com/128/363887173_fabb8fd0c0_m_d.jpg]
 
<br>''Koilos shutter on a [[Nifca and Molta plate folders|Sirius]].''
 
<br>''Picture courtesy of eBayer hbpartner. {{with permission}}''
 
</div>
 
The '''Koilos''' is a German leaf shutter. It is said that it was made by [[Kenngott]].<REF> See [http://www.largeformatphotography.info/shutters-history-and-use.html Ernest Purdum's article]. </REF>
 
  
== Cameras equipped ==
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{{Flickr_image
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|image_source= http://www.flickr.com/photos/bergheil/5845605220/in/pool-camerawiki/
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|image= http://farm4.staticflickr.com/3261/5845605220_2c2e9b3bc5_n.jpg
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|image_align= right
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|image_text= old style Koilos shutter on [[Alpin]]
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|image_by= Kazutaka Tsutsui
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|image_rights= (C)
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}}
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=== Cameras equipped ===
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* [[Murer's Express]]
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* [[Idea A|Pocket Idea A1]] (1911)
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* [[Lily (original)|Lily]] (1909–11)
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* [[Noble|Noble]]
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* [[Pearl (for plates and rollfilm)|Pearl No.4]] (1911)
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* [[Alpin]]
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{{br}}
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== Later Koilos ==
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{| class="plainlinks floatright" width=240px style="text-align: center;"
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|| [https://www.flickr.com/photos/camerawiki/48984531687/in/pool-camerawiki https://live.staticflickr.com/65535/48984531687_e446b8ce16_m_d.jpg]
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|-
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|| ''Koilos shutter on a [[Nifca and Molta plate folders|Lomax]]. Picture courtesy of eBayer hbpartner. {{with permission}}''
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|}
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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.
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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>
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=== Cameras equipped ===
 
The fact that a camera is listed here does not imply that all its versions were equipped with a Koilos shutter:
 
The fact that a camera is listed here does not imply that all its versions were equipped with a Koilos shutter:
* [[Nifcarette]]
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* [[Idea (metal)|Idea]] (isolated example)
* [[Nifca and Molta plate folders|Sirius]]
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* [[Nifcarette|Nifcarette and Sirius Bebe]]
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* [[Nifca-Dox]]
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* [[Nifca and Molta plate folders|Sirius and Lomax]]
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* [[Super plate folders|Super and Special Super]]
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* [[Tokiwa plate folders|Tokiwa]]
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* [[Weha plate folders|Weha]]
  
 
== Notes ==
 
== Notes ==
 
<references />
 
<references />
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== Bibliography ==
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* Awano Mikio (粟野幹男). "Senzen no Minoruta kamera" (戦前のミノルタカメラ, "Prewar Minolta cameras"). {{KKS012}} Pp.13–17.
  
 
== Links ==
 
== Links ==
* [http://www.largeformatphotography.info/shutters-history-and-use.html Shutters - History and Use], an article by Ernest Purdum at [http://www.largeformatphotography.info/ largeformatphotography.info]
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In English:
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* [http://www.largeformatphotography.info/shutters-history-and-use.html Shutters - History and Use], an article by Ernest Purdum at [http://www.largeformatphotography.info/ largeformatphotography.info] with erroneous mentioning of [[Kenngott]] as the shutter's maker
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In Japanese:
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* [http://blog.so-net.ne.jp/987/2006-05-09-1 Unknown plate folder] with a Koilos shutter and a [[Heliostar]] lens, at the [http://blog.so-net.ne.jp/987/ Monomono blog]
  
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[[Category: 1900-1905]]
 
[[Category: Leaf shutters]]
 
[[Category: Leaf shutters]]
 
[[Category: German shutters]]
 
[[Category: German shutters]]

Latest revision as of 06:16, 30 October 2019

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


Later Koilos

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:

Notes

  1. 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

Links

In English:

In Japanese: