Pruchased my 50D about a month ago and have had a play with the micro-adjust on the 70-200L but to be honest didn't really find there was much in it. Luv the 50D by the way...
However; I did some testing with my Tammy SP AF 17-50 2.8 today and have found that the best focus point appears to be about 10 - 15 mm in front of the focus point - this is quite noticeable when zoomed to 100%. Hence the lens is sharp as a tac but when I viewing I notice that the best focus point is in front of the actual point of focus.
My question is - out of interest and rather than taking a load of photos with groups of + & - micro adjusts, which way do I adjust for off set of front focus?
Thanks in Advance,