| The two that I received over the past two weeks FF about 25mm. Enough that the K20D couldn't correct it. Using the Tim Jackson test chart and staging a real life focus test both lenses were front focusing equally with my K10D and K20D. From the minimum focusing distance to infinity it was very noticeable. Things started to sharpen up @ around f5.6-8 and then the lens was great. Too bad that Sigma's quality control is lacking on this this batch of 70-200s.
I really wanted this lens to be a keeper, but sending in a new lens for adjustments is just not acceptable to me, especially after sending back two new lenses. I've been buying lenses for the past 30 years and this was the first one to truely dissapoint me.
I've read similar accounts that had my same experience and then an equal amount of people like the poster above who received a great copy. |