> Nitin asked:
> > do all smc 50/1.4 versions have f-stops from 1.4-16 or do some
> > goto values beyond 16 ?
> Nitin


12 Feb 02,  Fred  <[EMAIL PROTECTED]> wrote:
> I ~thought~ that all of the K-mount 50/1.4's go to f/22,
> while all of the screwmount 50/1.4's only go to 16.
> (Anyone out there know of any exceptions?)
> Fred


Fred & Nitin,

I have bayonet mount  50mm f1.4's  in K,  M,  and  FA versions.   All of
them go to f22.

I also have a screw mount  SMC Takumar 50mm f1.4  that goes to f16.    I
don't have experience with any others.

I just looked in Cooper's,  "The Asahi Pentax Manual"   and Shipman's,  "How
to Select and Use Pentax Cameras"  (together they cover Spotmatic's,  K's,
M's,  and the LX).   In both books,  all the lenses listed in the "Normal"
range  ( 50 & 55 mm)  with bayonet mounts go to f22,  while the screw mount
versions all go to f16.   I can't verify that charts are all inclusive.

Regards,
Tim
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