Originally Posted by
Keith B
I was pleasantly surprise at the AF. I read so much about how slow it is, but I think once you are use to it there isn't anything you couldn't shoot reliably with it.
If you're in poor focus-acquisition conditions and the lens goes hunting in the wrong direction, you're going to miss the shot unless you've got lightning reflexes to get a selected focus point onto a contrasty spot, possibly even releasing your focus trigger (whether it's half-press of shutter, AF-ON, or whatever you've rigged up) and re-pressing it.
I tried using it for a bicycling event last month. There was a zone of no return: depending on speed, once the bike/rider got close enough, focus couldn't keep up. Certainly not wedding conditions, except for the limo leaving, but close-ups during dancing could be disastrous without a "sports" lens.
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