I got the 100mmL yesterday. I made a point to quickly test the AF of the lens+camera and noticed nothing before I paid. At home with subjects of better interest, the AF "success" (I don't mean sharp, I mean not blatantly out of focus) rate ranges from
<0.5% for small water condensation on a flat window (so the focus should be easy)
0% for snow flakes (understandingly hard, MF has 2% success rate)
<1% for water droplets sprayed on a CD, to
50% for bank notes.
That's over a total of several hundred shots, handheld.
Is this normal?
Is everyone using MF only (or mostly) for their macro work? (Including in flight shots?)
At some point I was quite worried that either AF or IS malfunctioned, and if not for a word from a friend, I'd have brought the lens back to the store. Pointers to earlier posts on this are appreciated. Since it's a major purchase, I think most of you who know what to expect would not mind passing a word of reassurance or warning.
Many thanks in advance.