Quote (mkaplan @ May 25 2015 04:42pm)
Thanks, much appreciated. Looks like it's still up in the air... Reviews seem to be different from one site to the next. The labs review shows tamron as sharper at 600mm in the center, but another review in another language shows the sigma to be visually muuuuch sharper at 600mm.
Problem with a lot of the reviews is that i think some of them rely on auto focus, and calibration may be needed...minor calibration. I've seen some sample shots that seem off just slightly.
I'm still thinking I'll get the sigma, but I'm waiting on more reviews... The lab review is good, but it goes against some other reviews, and their sample images are terribly done...leading me to wonder if they made some errors.
The other thing is that I wonder if there's a fair bit of sample variation. I'd rather buy right away than get a lens that has been picked through, so to speak.