QUOTE(CGphotography @ March 10 2007, 07:41 PM) [snapback]94310[/snapback]
Thanks, Matt. (I was just watching your Lightroom tutorial!). I've hesitated in using the multi-spot AF for fear that it may grab onto something in the background, rendering the subject OOF. Has it worked pretty consistently for you?
The way I am using it - multi-spot with AI Servo, the AI Servo focus should lock onto the subject and "move" with the moving subject. In my experience I use center AF for everything but moving, sports-type action. For that I'm using the multispot AF. Is it wrong sometimes? Usually but most often when I actually try to focus on the same thing twice. If it nails it the first time but I let the button go and try to focus again it says "oh I must've been wrong!" and refocuses on something else. If you push it a third time in that case, it goes back to the subject almost everytime.
If you use AI servo I think it defeats the purpose of AI Servo, which for me is to shoot a multi-image composition such as my figure skater or something of the sort that uses a moving target. If the target can be locked on with center AF point, I always do that.
M
By the way - the fastest way to do this for me is actually to vary. I can set multi-spot AF and then by the click of one button on the 1d2 I have a preset AF which is set to center AF. So as something is moving, I can reset my AF very very quickly just like that.