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03-06-2012, 06:23 PM   #1
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Help: how to mod this lens to P/K?

Hi,

I have a Telesar 135mm f2.8 with mount in picture:


Anybody can tell me what mount it is, and is it possible to mod to P/K mount?

Any help would be much appreciated!

03-06-2012, 08:52 PM   #2
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That looks to me like a Canon FD mount. I won't say that converting it to Pentax PK mount is impossible -- but lacking machine shop equipment and skills, I wouldn't try it. I've modded Nikon, Olympus OM, Yashica C/Y, Petri; and adapted Exakta and Argus; and I have hopes for a Pentacon bayonet. But Canon and Minolta and Konica are best left to folks with some skills.
03-07-2012, 05:00 PM   #3
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Can't be canon because the FD was a breach mount. Easiest mod would be to M42 Get an old donor lens
03-09-2012, 07:20 PM   #4
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It can be done but it isn't easy -at all. I converted a Canon 85mm f/1.2 SSC to Pentax K mount - and that took me several weeks.

03-10-2012, 09:38 AM   #5
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Unless there is something special about this lens that makes it worth more than the $20 it would cost to pick up another no-name 135/2.8 that is already in K-mount, there is no way this machine shop experiment could possibly be worth the time and effort, not to mention the cost in parts.
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