Difference between revisions of "Topcon UV lenses"
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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]]. | 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]]. | ||
− | These unique lens designs do not have an aperture setting ring, as this is found on the camera body. | + | 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. | UV stands for Ultra Violet, as the lenses had a UV coating, and did not need a separate UV filter. |
Revision as of 16:44, 3 May 2016
Mount of UV Topcor 1:4 f=135mm image by Vagn Sloth-Madsen (Image rights) |
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
- ↑ 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.
- ↑ This lens was supplied with the first version of the IC-1.
- ↑ This lens was Supplied with the Unirex EE. Some versions bear the Hi Topcor marking.
- ↑ This lens was supplied with the 100 Auto/Uni and Wink Mirror S.
- ↑ This lens was supplied with the second version of the IC-1.