Quote Originally Posted by WAFKT
Does anyone
take advantage of this feature on occasion?<span> Did you find after testing the AF that there were certain
lenses/body combinations that benefited from a little microadjustment applied?<span> What was your approach for performing this adjustment accurately?

After shooting with my 70-200 f/2.8 L IS for 2 years on 2 different bodies, I decided it was front focusing a bit. So I set up a tripod in one end of the largest room in my apartment and I set up a test subject in the other (my photo backpack). I set the lens to 200mm, and started testing. Sure enough the lens was front focusing. I dialed in the adjustment until it looked like it was just right. I've been ecstatic with the results. My keeper rate went up significantly after the adjustment (even though I didn't do the adjustment under optimal conditions).


Quote Originally Posted by WAFKT
...should microadjustments be made at (or around) the working distance most used (e.g. if the lens is going to be used primarily for closer working distances - like macro or portrait photography; versus at greater working distances - like sports or wildlife), or if calibrated for one working distance is the calibration consistent for all working distances at the same focal length?

From what I understand, microadjustments should be made from the focal length most used on a zoom lens. I think the microadjustment will help at all focal lengths, but you'll have the best results from the focal length you did the microadjustment at.