|
Forum: Pentax SLR Lens Discussion
06-04-2015, 05:31 AM
|
| |
It is, and the optical quality is supposed to be the equal of many primes all the way through. The sour note for Pentax owners is a reputation for not playing at all well with Pentax AF, which is what made me decide NOT to buy it. Some people have had no problems straight out of the box, others have found that they can tweak it with Sigma's lens dock and others still just want to throw the damn thing off a tall building for all the focusing heartache it's given them.
Ricoh/Pentax should IMO bite the bullet, licence the optics from Sigma (if Sigma will let them) and incorporate their own bespoke AF system for this lens. We need it that badly, and it would sell for sure if they could guarantee accurate focus control.
---------- Post added 04-06-15 at 10:16 ----------
Exactly. Are you shooting to the charts, or shooting for an actual image of something in the real world? You can shoot at charts from a heavy tripod all day, but if the diffraction you get from f/11 onward doesn't actually show in the glossy six-by-fours you print out at Walmart and stick in your album, you may as well park the family in front of that historic monument, stop your 18-270 down to take the whole thing in, and go for it.
|
