Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
03-06-2012, 06:23 PM   #1
Junior Member

Join Date: Nov 2009
Photos: Albums
Posts: 25
Help: how to mod this lens to P/K?


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
Veteran Member
RioRico's Avatar

Join Date: Jun 2008
Location: Limbo, California
Posts: 11,264
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
Lowell Goudge's Avatar

Join Date: Jan 2007
Location: Toronto
Photos: Gallery | Albums
Posts: 15,400
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
Digitalis's Avatar

Join Date: Mar 2009
Location: Adelaide.
Posts: 8,796
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
Marc Sabatella's Avatar

Join Date: Sep 2006
Location: Denver, CO
Photos: Gallery
Posts: 10,686
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.

  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
help, k-mount, mod, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Looking for a interim-mod... Rense Mini-Challenges, Games, and Photo Stories 2 05-08-2011 11:48 AM
Infinity Three Minute Mod for M42 lens kilolani Do-It-Yourself 1 02-15-2011 05:07 PM
PK lens mod to work in Av mode matam Pentax SLR Lens Discussion 6 04-05-2010 07:07 AM
Old F@rt Syndrom (lens mod) pacerr Pentax SLR Lens Discussion 16 04-04-2009 09:38 AM
Lens Mod Possibility? RioRico Pentax SLR Lens Discussion 6 03-12-2009 11:23 PM

All times are GMT -7. The time now is 10:55 PM. | See also:, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]