p.2 #1 · How to use AI Servo when photographing wildlife?
Ai Server mode -> tracks and retains focus constantly
Continuous mode I can only assume means the shutter drive mode.
As for the * setting, I go with AE/AF No AE lock on the rebel, in case the clouds are changing shadows, or if recomposing.
My question to add to this is for BIF, do most use center point only, or do you keep all points active to allow for some sloppiness in your tracking. I'm not great at tracking yet and have found leaving all points active, especially on my 50d seems to help. My XSi isn't great at tracking small moving subjects or subjects moving directly towards or away, the 50d is much better at it.
p.2 #2 · How to use AI Servo when photographing wildlife?
mt2mt2 wrote:
A quick question about AI Servo. When the subject is NOT moving, does the focus accuracy suffer? I like to stalk birds and since they usually see me before I see them, most of my shots are takeoff and in flight. 40D is set to get at least 1/1000th shutter speed and AI Servo with * button for focus. Seems to work pretty good when I do my part. Sometimes I spot the bird before he takes flight and I can get some perch shots. For these the focus seems to wander and not lock in like in One Shot mode. I don't want to miss the takeoff shot, so I don't want to change focus mode if i don't have to. Is AI Servo less precise in its ability with non-moving subjects?
I keep my cameras in AI servo 99% of the time. Unless I know my subject isn't going to move (like a landscape or a bowl of fruit). I shoot mostly wildlife & my 2 toddlers, so the chances of my subjects moving are close to 100%. I've never had a problem with focus accuracy.
