10-15-2016, 08:18 PM
A lot of people expect a lens to be perfect focusing when it comes out of the box - which to some point should be normal. Going public and offering to all owner of 100 million + sold lenses could cause serious troubles on the support side of things. Sigma as well (as Tamron?) offer their dock not only for lens adjustments (which by the way happen to be 4 different distances at 4 differeent zoom positionsm if it's not a prime) and you can try one day for yourself to do those adjustments, toni-a ^_^
Just to realize that at the end of the day the phase AF of a DLSR is a quick and sometimes correct guessing.
Just to realize that at the end of the day the phase AF of a DLSR is a quick and sometimes correct guessing.