Larry, Good friend of mine has Sigma lens in Canon mount. He's using it on 5dmk3. The results are excellent. Wide open center sharpness is really good. The rendering of this lens is also very pleasing to his and actually to my eye as well.
So if you really need 1.4 over 1.8, you cannot really go wrong with Sigma. As for ergonomics, I suggest you visit a closest to you camera store and give it a try. Good luck with your hunt. Boris On 19 Oct 2016 08:13, "Larry Colen" <l...@red4est.com> wrote: I do a lot of my photography in really low light. The 2/3 stop between f/1.8 and f/1.4 doesn't seem like much, but when you're talking the difference between 1/13 and 1/20 Second, it can be a huge difference. Similarly, doing night landscapes, the 2/3 stop can be a big deal with star motion in the background. Does anyone have experience with both the 31 limited and the 35 art? I can't justify buying the faster lens without selling the 31. It's been a workhorse lens for me, particularly since it was my only fast "standard" in APS. I've heard good things about the sigma, and even if it isn't as sharp in some situations, the faster aperture would make an even bigger difference in others. LRC -- Larry Colen l...@red4est.com (postbox on min4est) http://red4est.com/lrc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
