Originally posted by pres589 The tape on the gold trim ring probably hide where it says "by SIGMA".
For Pete's sake, people, please stop perpetuating this lie!
---------- Post added 24-02-17 at 10:34 AM ----------
Originally posted by Rico Here is an image of the Sigma 50mm ƒ1.4 Art lens:
The Pentax D-FA* 50mm ƒ1.4 prototype looks to be in a similar vein to the Sigma.
I would like to see Ricoh/Pentax make a modern FA 50 ƒ1.4. New coatings. Quick-Shift. WR. etc. No need to reinvent the wheel.
It looks nothing like the D FA*. No element looks similar to the D FA*'s. The shape is different, the size appears to be different (77 vs 72mm filter threads, by the way), everything is different.
Go and compare the Tamron 24-70 (or 15-30) with the corresponding Pentax D FA - there the resemblance is obvious. Even the buttons are the same and not the ones used by Pentax.
No need to reinvent the wheel... let's keep it as in 1968? (when the FA 50 f/1.4's optical design originates).
L.E. My bad, folks - I had another look and now I see how it resembles the Sigma; definite proof of a rebadge! You see, both lenses have the lens mount, distance scale, focus ring and hood in this specific order!
Last edited by Kunzite; 02-24-2017 at 01:36 AM.