Originally posted by Stratario I don't have that lens but I've been doing similar tests with three other zooms in the last few days. I have come to the same conclusion as you that differing amounts of AF correction is needed for different situations. But I believe it is more focal distance related rather than distance related. Following are my findings with three lenses that I have been playing with.
Hey thats pretty interesting, looks like we're both equally anal
I didnt even think of changing focal lengths, I did all mine at 135mm. I guess its time to test a little more, but would be nice to know if this kinda thing is normal on a 50-135..