Difference between revisions of "Tōkyō Kōgaku lenses in Leica screw mount"

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''Tokyo Kogaku'', later renamed [[Topcon]], made some lenses in 39mm Leica mount for some Japanese Leica copies, mainly the [[Leotax]]. All were all chrome unless noted. The chronological order is State - C Simlar - Simlar - Topcor - Topcor S.
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[[Topcon|Tōkyō Kōgaku]] (the later [[Topcon]]) made lenses in [[39mm screw lenses|39mm Leica mount]] for some Japanese Leica copies, mainly the [[Leotax]]. All were all chrome unless noted. The chronological order is State - C Simlar - Simlar - Topcor - Topcor S.
 
* 35/2.8 Topcor, sold with a very big external finder
 
* 35/2.8 Topcor, sold with a very big external finder
 
* 50/3.5 State (collapsible)
 
* 50/3.5 State (collapsible)
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== Links ==
 
== Links ==
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* [http://www003.upp.so-net.ne.jp/Topconclub/lens6.htm 39mm lenses page of the Topcon club]
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In Japanese:
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* [http://www003.upp.so-net.ne.jp/Topconclub/lens6.htm Tōkyō Kōgaku 39mm screw lenses] at the [http://www003.upp.so-net.ne.jp/Topconclub/ Topcon Club website]
  
 
[[Category: 39mm screw mount]]
 
[[Category: 39mm screw mount]]
 
[[Category: Japanese lenses]]
 
[[Category: Japanese lenses]]
 
[[Category: Topcon]]
 
[[Category: Topcon]]

Revision as of 18:26, 12 January 2007

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Tōkyō Kōgaku (the later Topcon) made lenses in 39mm Leica mount for some Japanese Leica copies, mainly the Leotax. All were all chrome unless noted. The chronological order is State - C Simlar - Simlar - Topcor - Topcor S.

  • 35/2.8 Topcor, sold with a very big external finder
  • 50/3.5 State (collapsible)
  • 50/3.5 C Simlar (collapsible)
  • 50/3.5 Simlar (collapsible)
  • 50/3.5 Topcor (collapsible), diaphragm ring around the front lens, then around the barrel
  • 50/3.5 Topcor K (rigid), aluminium barrel and knurled rings
  • 50/2.8 Topcor, black and chrome finish
  • 50/2 Topcor
  • 50/2 Topcor S, chrome, then black and chrome, then black with aluminium barrel
  • 50/1.8 Topcor S, black finish
  • 50/1.5 Simlar
  • 50/1.5 Topcor
  • 90/3.5 Topcor, aluminium barrel and knurled rings, sold with an external finder
  • 135/3.5 Topcor, aluminium barrel, sold with an external finder with 50/90/135 frames

Links

In Japanese:

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