Difference between revisions of "Light (shutter)"

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The '''Light''' is a leaf shutter mounted on some Japanese cameras in the second half of the 1930s.
The '''Light''' is a leaf shutter mounted on some Japanese cameras in the 1930s. It was perhaps made by [[Ōhashi|Ōhashi Kōki Seisakusho]], a company which is known to have used this trademark and to have mounted Light shutters on its [[Roll Light Ref]] camera.
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== General description and manufacturer ==
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The front plate of the Light shutters is inscribed ''Light'' at the bottom and ''Patent Pending'' at the top, and has a round ''MB'' logo on the right.<REF> Close-up picture in Inoue, p.130, picture in {{SUG}}, item 1176, and pictures in various advertisements for the cameras mentioned below. </REF> The aperture scale is screwed to the bottom. The speeds are engraved on the moving rim.
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A similar ''MB'' logo appears on the Japanese "Tokyo Compur" and "Rapid Compur" shutters, notably mounted on the [[Rollekonter]] 6×6 TLR made by [[Mori|Mori Seisakusho]]. A wartime document says that these shutters were made by [[Bikōdō]], a company that was related to Mori.<REF> See [[Bikōdō]]. </REF> The "MB" initials might stand for <u>M</u>ori and <u>B</u>ikōdō, and the Light shutters were perhaps an earlier product of these two companies.
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The Light brand name might also indicate a relationship with [[Ōhashi|Ōhashi Kōki Seisakusho]], a company which is known to have used this trademark and to have mounted Light shutters on its [[Roll Light Ref]] camera.
  
 
== Versions and cameras equipped ==
 
== Versions and cameras equipped ==
List of versions:
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Two main models exist, in #0 or #00 size.
* '''Light B''' (5&ndash;250, T, B)
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* '''Light C''' (25, 50, 100, T, B)
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=== #0 size ===
* '''F Light''' (5&ndash;150, T, B)
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The '''#0 size''' model has been observed once, with 25, 50, 100, B, T speeds and a [[thread and needle release]], on a [[Masnette]] plate folder. It is certainly the model advertised on the [[Venus (Seibidō)|Venus FF]] plate folder.
The exact shutter version is not always mentioned by the sources. The versions above were perhaps predated by an original version with no model name.
 
  
On the Light B, the shutter plate is inscribed ''Light'' at the bottom and ''Patent Pending'' at the top, with an ''MB'' logo in a circle on the right. The aperture scale is screwed to the bottom. The speeds are engraved on the shutter rim in that order: 5, 10, 25, 50, 100, 250, B, T.<REF> Close-up picture in Inoue, p.&nbsp;130. </REF>
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=== #00 size ===
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The '''#00 size''' model exists in at least three versions:
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* '''Light B''' (5, 10, 25, 50, 100, 250, B, T)
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* '''Light C''' (25, 50, 100, B, T)
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* '''F Light''' (5–150, T, B)
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The exact shutter version is not always mentioned in the available documents. Here is a list of cameras with a #00 Light:
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* [[Semi Dymos]] (advertised and observed with a Light B)
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* [[Hansa Semi Rollette]] (announced and advertised with an F Light)
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* [[Roll Light Ref]] (advertised with a Light B and Light C)
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* [[Rollekonter|Rollekonter B]] (reported only)
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The Rosen shutter mounted on the [[Semi Rosen]] has the same aspect and features as the Light B, and is certainly a name variant.
  
The camera list is incomplete, and not all the versions of these cameras have a Light shutter:
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== Notes ==
* [[Venus (Seibidō)|Venus]] plate folder (Light)
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<references />
* [[Semi Dymos]] (Light and Light B)
 
* [[Hansa Semi Rollette]] (F Light)
 
* [[Roll Light Ref]] (Light B and Light C)
 
  
 
== Bibliography ==
 
== Bibliography ==
 
* {{Showa10}}
 
* {{Showa10}}
* Inoue, Mitsuo (井上光朗). "Shashin renzu no yoake. Renzu-ya Funsenki" (写真レンズの夜明け・レンズ屋奮戦記, Dawn of the photographic lens &ndash; Fierce war tales between lens shops). {{KKS014}} Pp.&nbsp;128&ndash;132.
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* Inoue, Mitsuo (井上光朗). "Shashin renzu no yoake. Renzu-ya Funsenki" (写真レンズの夜明け・レンズ屋奮戦記, Dawn of the photographic lens &ndash; Fierce war tales between lens shops). {{KKS014}} Pp.128–132.
  
 
[[Category: Leaf shutters]]
 
[[Category: Leaf shutters]]
 
[[Category: Japanese shutters]]
 
[[Category: Japanese shutters]]

Latest revision as of 16:39, 15 September 2010

The Light is a leaf shutter mounted on some Japanese cameras in the second half of the 1930s.

General description and manufacturer

The front plate of the Light shutters is inscribed Light at the bottom and Patent Pending at the top, and has a round MB logo on the right.[1] The aperture scale is screwed to the bottom. The speeds are engraved on the moving rim.

A similar MB logo appears on the Japanese "Tokyo Compur" and "Rapid Compur" shutters, notably mounted on the Rollekonter 6×6 TLR made by Mori Seisakusho. A wartime document says that these shutters were made by Bikōdō, a company that was related to Mori.[2] The "MB" initials might stand for Mori and Bikōdō, and the Light shutters were perhaps an earlier product of these two companies.

The Light brand name might also indicate a relationship with Ōhashi Kōki Seisakusho, a company which is known to have used this trademark and to have mounted Light shutters on its Roll Light Ref camera.

Versions and cameras equipped

Two main models exist, in #0 or #00 size.

#0 size

The #0 size model has been observed once, with 25, 50, 100, B, T speeds and a thread and needle release, on a Masnette plate folder. It is certainly the model advertised on the Venus FF plate folder.

#00 size

The #00 size model exists in at least three versions:

  • Light B (5, 10, 25, 50, 100, 250, B, T)
  • Light C (25, 50, 100, B, T)
  • F Light (5–150, T, B)

The exact shutter version is not always mentioned in the available documents. Here is a list of cameras with a #00 Light:

The Rosen shutter mounted on the Semi Rosen has the same aspect and features as the Light B, and is certainly a name variant.

Notes

  1. Close-up picture in Inoue, p.130, picture in Sugiyama, item 1176, and pictures in various advertisements for the cameras mentioned below.
  2. See Bikōdō.

Bibliography