Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
03-03-2010, 03:08 PM   #1
panoguy's Avatar

Join Date: Sep 2007
Location: Washington, D.C.
Posts: 3,327
Feedback Score: 66 (100%)
[ACQUIRED] Cheap "donor" KA-mount 28mm f/2.8 lens - any make

Bring me your tired, your cheap, your huddled masses of vivitars, focals, and sigmas...

I'm looking for a parts donor for a lensmount transplant I'd like to do. I have a 28mm f/2.8 lens, and it needs a new KA-mount (meaning manual focus, but automatic aperture with electrical contacts for max. 2.8). Help a mad scientist bring some great glass to his Pentax!

I am willing to pay up to $30 for a good, all-metal-mount sample (yes, I've seen *plastic* KA mounts!), shipped. Obviously, this might barely cover the shipping from some countries and locations, which is up to you, but that's the idea behind a donor lens. If you're in Toronto, Ontario, this is quite a deal, and if you're not, you can let me know if you'd prefer maple syrup instead of a paypal credit. ;-)

Doesn't matter if the lens is metal or plastic bodied, has fungus stains, chips, cracks, broken aperture blades, or even if the front element is missing! And I'll even add bonus cash of $5 for a mount that has a "retainer ring" between the mount and the rear element.

Here is an image of a KA-mount 28mm f/2.8 lens with the retainer ring (the black ring with 3 screws in it just inside the chromed lensmount). That inner ring is convenient for me, but not required...


Last edited by panoguy; 03-03-2010 at 03:25 PM.
03-03-2010, 06:45 PM   #2
Veteran Member

Join Date: Feb 2009
Location: Alameda, CA
Posts: 3,206
Feedback Score: 40 (100%)
Why should you pay $35 for a broken 28mm 1:2.8 lens when $10 more brings you a perfectly good lens, used but in excellent condition, shipped to your door?

Photo 1
Photo 2
Photo 3

BTW, the lens is a rebadged Sigma Mini-Wide

Send me a PM if interested.

Last edited by SOldBear; 03-04-2010 at 08:25 PM.
03-04-2010, 08:02 PM   #3
Veteran Member

Join Date: Mar 2009
Location: Chicago suburbs
Posts: 848
Feedback Score: 11 (100%)
You have a PM

  • 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!
28mm, aperture, donor, element, f/2.8, lens, lensmount, mount
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: Bausch & Lomb "Criterion 4000" 1200mm f/12 Mirror Lens + Hard Case wallyb Sold Items 14 02-07-2010 02:29 PM
Wanted - Acquired: Pentax "A" 50mm f/1.4 MF Lens Ed n Georgia Sold Items 2 02-07-2010 01:42 PM
For Sale - Sold: Sigma Mini-Wide II 28mm/f2.8, MF, K-mount, "A" setting, in excellent condition yb_abq Sold Items 14 04-25-2009 03:55 PM

All times are GMT -7. The time now is 02:06 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]