Upload & Sell: On
i have owned several copies of that glass. mine were the original versions. the zoom range is the reason that i tried more than one copy. i really liked that aspect of the lens.
however, every copy i owned either front or back focused at least half of the time. each was sent to sigma w/o correction success.
i just finally gave up and went to big white primes and have had zero focus grief. i was shooting w/ 1D Mk II bodies at
that time. also, again, fwiw... i use a sigma 70-200 2.8 that has had no issues at all.