Originally posted by Giklab Come on man, you're comparing with Zeiss?
Oh yes, most other brands don't have such primes.
I would. I have a Leica rangefinder (11f) with a Leitz lens. I'm very familiar with Leica and Leitz lenses.
But, back in the '80's I had a Leica M4 with 35mm, 50mm and 90 mm Leitz lenses for a long weekend.
I took a lot of pictures and I also did a comparison shoot, using my Pentax ES 11 and Takumar lenses of similar focal length.
I took pictures, using the same subject, same lighting, same time with both Pentax and Leica.
I blew the pictures up to 8 X 10 and frankly, neither I or my friend (Nikon owner) could tell which picture was taken by either Pentax or Leica.
Maybe there might of been discernible differences at larger enlargements....but as I didn't enlarge beyond 8 X 10, I'll never know.
But I do this from experience....top Takumar or Pentax lenses do not take a back seat to other manufacturer's lenses.