Upload & Sell: On
Sven Jeppesen wrote:
When a user like Roger C at Lensrentals get 30 copies of the Sigma lens. And the AF where spot on with every lens he got. That says a lot about the AF with this lens
Or conversely, it says very little about his testing methodology.
A lot of the apparent focus problems with this lens seem to be closer-in, which may be closer than what a test bench would direct you to use or that quick focus tests would show.
Point is - just because Roger tested 30x copies and found them good doesn't mean they're all good at all distances - only the distance(s) he tested.
I'm not arguing for or against the lens, no horse in this race, but until the details of Roger's testing is known (have a link? I only have the one Sigma 35 blog post), then I would be hesitant to call his results iron-clad for the focus reliability.