As much as I love my L glass I should have gotten Zeiss stuff in the first place.
Why? What about autofocus? I can guess the answer, because the Zeiss is sharper!?
I am experimenting at the moment with a A-1, and logically, manual focus lenses. I have to admit, I like to manual focus very much, and I will convert my 55mm FD lens to EF!
Until I got the A-1, manual focus was no choice, 'cause as lazy as I am, I am not using the manual focus ring with my L lenses. But now I try to discover, at least the FTM, so this week there was some insect flying in front of my 100mm Macro lens, and it was too small to put it on a AF point, and also quickly moving to follow it with a AF point (60D), so I tried to catch it sharp focusing with the focus ring.
Did I succeed? Well kinda, see yourself. Probably the aperture was still to wide open (f/5.6) to get the whole thing sharp.
Still I would say for half of my pictures I need the AF, otherwise I would miss the moment..