M42 and Pentax-M Lenses - Same mount?

3

3rdwave

Active member
Do these have the same type of mount?
I have a mount for a Super Takumar 50mm 1.4. I was wondering if I could use that same mount for a Pentax-M lens? (specifically the 28mm 2.8)

Thanks!
 
it seems like that thing some people call "Pentax-M" is one of the iterations of the "Pentax-K" mount:
http://en.wikipedia.org/wiki/Pentax_K_mount
"Bodies equipped with the original K mount include the K series, the M series except the ME F, and the LX. Lenses that support it include those labelled 'SMC Pentax', 'SMC Pentax-M' and 'SMC Pentax-A'. These K mount bodies cannot use lenses that lack an aperture ring, such as FAJ or DA."

pentax-K has a &000000000000004546000045.46 mm focal flange distance, and so should work on canon, but not nikon
http://en.wikipedia.org/wiki/Lens_mount
 
Thanks man!
say, does anyone know about the known issue of Takumar's hitting the mirror when set to infinity?
Is this only on a full frame sensor? How do you know if you have the problem? I was able to snap away and shoot without any issues.

Thanks!
:)
 
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