Fireguy274 From United States of America, joined Dec 2003, 299 posts, RR: 7
Reply 1, posted (10 years 9 months 2 weeks 6 days 6 hours ago) and read 3410 times:
From what I read on the Sigma web site is this. AF Mount HSM: Sigma, Canon(EF) and Nikon(D).
AF Mount: Minolta, Pentax. I believe the non HSM is for Minolta and Pentex. The HSM is similar to the Canon USM. The following is a quote from Sigma's site " And with the HSM autofocus drive (Canon, Nikon and Sigma AF models only) it is incredibly quiet and quick when autofocusing, and you can focus manually without having to disengage the AF mode. In addition, this lens can be used with Sigma's two EX teleconverters for additional versatility (manual focus only)."
B&H photo has a good price on this lens. 900+change. I hope this helps...Artie
Mia777 From United States of America, joined Sep 2002, 1165 posts, RR: 6
Reply 3, posted (10 years 9 months 2 weeks 6 days 5 hours ago) and read 3412 times:
My latest photos were taken with the Sigma 50-500 (Canon mount) HSM which I really like. Much more impressive though are Sven De Bevere's shots who (I think...) uses the 50-500. He has some incredible pictures so check them out!