Difference between revisions of "Topcon UV lenses"

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|image_text= Mount of UV Topcor 1:4 f=135mm
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|image_text= UV Topcor 1:2 f=50mm
 
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The '''UV mount''' lenses from [[Tōkyō Kōgaku]] are used on cameras from the 1960's (like the Topcon 100 Auto, the [[Topcon Uni|Uni]], and [[Topcon Unirex|Unirex]]) and the 1970s (like the [[Topcon IC-1 Auto|IC-1 Auto]]). These unique lens designs do not have a built-in shutter, but instead are mounted directly onto the shutter assembly protruding from the camera body.
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The '''UV mount''' lenses from [[Tōkyō Kōgaku]] were produced from the 1960's specifically for the [[Topcon Wink Mirror S]] and Topcon 100 Auto/[[Topcon Uni|Uni]], and further used by the [[Topcon Unirex|Unirex]] and the 1970s [[Topcon IC-1 Auto|IC-1 Auto]].  
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These unique lens designs do not have an aperture setting ring, as this is found on the camera body. The maximum aperture of the lens is "dialed-in" to a  camera body mounted control when the lens is first fitted. This sets a maximum aperture parameter for the camera's exposure system. All Topcor UV lenses have a common minimum aperture of f/22.
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UV stands for Ultra Violet, as the lenses had a UV coating, and did not need a separate UV filter.
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Later variants of standard lenses where marked Hi Topcor.
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It appears that the standard lenses all had six elements.
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* UV Topcor 28mm f/4
 
* UV Topcor 28mm f/4
 
* UV Topcor 35mm f/3.5
 
* UV Topcor 35mm f/3.5
* UV Topcor 50mm f/2 (2 models including a Hi Topcor for IC-1 Auto)
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* UV Topcor 50mm f/2 <ref>The Unirex was sold with a bespoke silver finished 50mm f/2 lens on the chrome camera bodies, or a standard black barrel lens on the black camera bodies.</ref>
* UV Topcor 53mm f/2
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* UV Topcor 50mm f/2 (Hi Topcor) <ref>This lens was supplied with the first version of the IC-1.</ref>
* UV Topcor 55mm f/1.8 (Hi Topcor for IC-1 Auto)
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* UV Topcor 50mm f/2.8 <ref>This lens was Supplied with the Unirex EE. Some versions bear the Hi Topcor marking.</ref>
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* UV Topcor 53mm f/2 <ref>This lens was supplied with the 100 Auto/Uni and Wink Mirror S.</ref>
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* UV Topcor 55mm f/1.8 (Hi Topcor) <ref>This lens was supplied with the second version of the IC-1.</ref>
 
* UV Topcor 100mm f/4
 
* UV Topcor 100mm f/4
 
* UV Topcor 135mm f/4
 
* UV Topcor 135mm f/4
 
* UV Topcor 200mm f/4
 
* UV Topcor 200mm f/4
  
UV lenses were originally made for the Uni. The Unirex was sold with a bespoke silver finished 50mm f/2 lens. The IC-1 Auto similarly came with a bespoke Hi Topcor 50mm lens, where the first versions got an f/2, and later versions got an f/1.8.
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== Notes ==
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<references />
 
   
 
   
  

Latest revision as of 10:43, 5 July 2017

The UV mount lenses from Tōkyō Kōgaku were produced from the 1960's specifically for the Topcon Wink Mirror S and Topcon 100 Auto/Uni, and further used by the Unirex and the 1970s IC-1 Auto.

These unique lens designs do not have an aperture setting ring, as this is found on the camera body. The maximum aperture of the lens is "dialed-in" to a camera body mounted control when the lens is first fitted. This sets a maximum aperture parameter for the camera's exposure system. All Topcor UV lenses have a common minimum aperture of f/22.

UV stands for Ultra Violet, as the lenses had a UV coating, and did not need a separate UV filter.

Later variants of standard lenses where marked Hi Topcor.

It appears that the standard lenses all had six elements.


  • UV Topcor 28mm f/4
  • UV Topcor 35mm f/3.5
  • UV Topcor 50mm f/2 [1]
  • UV Topcor 50mm f/2 (Hi Topcor) [2]
  • UV Topcor 50mm f/2.8 [3]
  • UV Topcor 53mm f/2 [4]
  • UV Topcor 55mm f/1.8 (Hi Topcor) [5]
  • UV Topcor 100mm f/4
  • UV Topcor 135mm f/4
  • UV Topcor 200mm f/4


Notes

  1. The Unirex was sold with a bespoke silver finished 50mm f/2 lens on the chrome camera bodies, or a standard black barrel lens on the black camera bodies.
  2. This lens was supplied with the first version of the IC-1.
  3. This lens was Supplied with the Unirex EE. Some versions bear the Hi Topcor marking.
  4. This lens was supplied with the 100 Auto/Uni and Wink Mirror S.
  5. This lens was supplied with the second version of the IC-1.


Links