Not to muddy the waters, Boris, but Paul didn't mention the K-mount Takumar "Bayonet," which is a totally different creature from the Super-Multi-Coated Takumar OR the Super-Takumar 135mm f/2.5, both of which have M-42 screw thread mounts and 58mm filter rings. There were a number of M-42 mount Takumars in 135mm focal length and f/2.5 aperture, and they came out long before the Bayonet version did. The Model II version of the above mentioned Super-Multi-Coated Takumar 135mm f/2.5 was a newer design, with one more element, and was designed for enhanced sharpness and contrast.
keith whaley Boris Liberman wrote: > > Hi, Paul! > > Takumar Bayonet (or Takumar K?) 135/2.5 is a consumer grade lens. It > has filter diameter 52 mm. Many people here, including me, own this > lens. It is not bad at all, but it is a consumer grade anyway. > > Pentax SMC 135/2.5 is an excellent lens, according to what I've been > reading on the list. It has filter diameter 58 mm and is renowned as a > true gem. Am I right, PDML wizards? <grin>. > > Cheers! > > Boris

