I found a slightly older EF300 F/4.0 L USM for sale locally and picked it up for my daughter. The lens was in great shape and was owned by a photographer for the "other" newpaper across town. I put it on the 1D MK II and the 5D MK II tonight and it appears very sharp and clear.


I do have a question for anyone that owns this lens.


It seems to focus more quicklyfrom about 20' to infinity than it does in close. This doesn't seem to change by adjusting the focus limit switch. It's just slower when it's focusing on closer objects. Is this normal operation for this lens?