Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
08-16-2008, 10:09 AM   #16
Veteran Member
Big Dave's Avatar

Join Date: Jan 2008
Location: San Antonio, Texas
Photos: Gallery
Posts: 547
The difference is only 1.5mm between mounts. The leica lens bayonet would have to fit inside the female K-mount. I don't think that that is possible. The other option is a corrective element in the adapter, which is a poor idea, unless it is optomized for a specific lens. I can't even afford a used leica lens anyway. I have always wanted to cut down a 6mp Pentax DSLR and add a 4/3rds mount. Then I could use just about any brand lens with the 4/3rds adapter. It would only have to be recess by 6.33mm. The mirror box is recessed 9mm, so it would be a peice of cake to do. It would even accept 4/3rds lenses. No appeture control of course,so forget that. Anyone have an old Pentax to donate for a research project? LOL


QuoteOriginally posted by nixcamic Quote
Someone needs to make a leica R to pentax adaptor, there's plenty enough flange distance difference.

08-17-2008, 07:57 AM   #17
Site Supporter
Blue's Avatar

Join Date: Jun 2008
Location: Florida Hill Country
Photos: Gallery | Albums
Posts: 17,236
QuoteOriginally posted by BBear Quote
I met a Canon guy using a M42 lens and that kinda surprised me. I had no idea Canons could use M42. He started to tell me than Canon has the widest hybrid alternatives in the SLR market, being somehow compatible with Contax/Yashica, M42, Nikon, Minolta, and Leitz mounts. (not sure what "somehow" means here... but i guess you'd need at least a mounting adapter)

How accurate is that statement?

And how flexible are the Pentax bodies with respect to other mounts? If the above is true, can Pentax bodies also support other mounts with a proper adapter?

He is sort of correct. There are a lot of quirks. For example, with the k-mount to EOS, the canon guys often modify the aperture lever by shortening or removing it.

I have to unique adaptors. One is made by canon to allow the use of the Canon 50mm f3.5 macro on EOS cameras. It is called the Canon FD-EOS macro lens mount converter and only works with the macro lens. I also have a rare Tamron Adaptall 2 mount EOS-M for the adaptall 2 lenses. Canon made some adapters, but they are specific for certain lenses and were pricey. The vast majority of the adapters out there are "chinese made" and of varying quality and may require tinkering. On top of that some of them use an optic to correct for the infinity focus and that actually puts a small level of magnification which can actually reduce the IQ of the lens.

I think across the board, Pentax has more options because we already have hundreds of lenses with K mount and m42 mount made by Pentax and 3rd party manufactures. Plus you can always convert a lens to m42 and use it on some level. I just never saw the rational to going from a particular mount to m42, especially since I have a modest collection of Tamron SP adaptall 2 lenses if I wanted to use them on my Spotmatic.

  • 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!
adapter, bodies, camera, canon, dslr, lens, m42, mounts, pentax, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax AF Bodies and Lens Compatibility woof Pentax Film SLR Discussion 9 09-04-2010 08:24 AM
Pentax K-x-Sears Lens Compatibility bsamcash Welcomes and Introductions 6 07-31-2010 12:56 PM
SDM lens & Pentax body compatibility bencason Pentax DSLR Discussion 6 02-08-2009 01:26 PM
Question about lens compatibility with Pentax DSLRs. bill500 Pentax DSLR Discussion 9 01-04-2009 07:45 PM
Pentax & Canon Lens Compatibility? Lloydy Pentax SLR Lens Discussion 10 01-30-2008 08:30 PM

All times are GMT -7. The time now is 01:07 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]