Do you keep the AF-On / AF-C button pressed

bigrob

bigrob

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I was reading the blog from this post http://www.talkphotography.co.uk/forums/showthread.php?t=329255 and wondered what you guys do.

At what point do you hold/release the back button focus button.

In my post first go at Event photography I was releasing the AF-On button, then when I saw the shot I wanted I pressed it.

If wonder though would it be better to keep it pressed as I move the lens around.

What do you guys do for different situations?
 
Ooops I think I may have posted in that thread. I'll have a re-read. Thanks Gary.
 
Re-read the thread and going to try

On my Mk III I had it set on No 0 - Metering start + AF Start.

I am now changing to 1/ Shutter button/AF-On button, set this to No2 - Metering start/Meter + AF start
to see how I get on.
 
There is quite a lot in that thread, but I don't think that this specific question was addressed.

My own method is:

Track whilst following action through the viewfinder.
Don't track whilst changing or reacquiring a new target, whether watching through the viewfinder or out of my other eye (or over the top of the camera).

Why?:
Tracking uses battery power, especially if IS is on. Not that big an issue with modern 1D & D3 series cameras, but worth bearing in mind, especially if it's a long day.
Extremes of focus. If you're just panning the lens and not tracking, the camera could, and may well, pick up a focus point at either infinity (more likely) or at close range. That then means that the camera has to work harder to acquire focus at an intermediate range where the play usually is.
 
Thanks Mark - just what I was looking for.

I was worried about "stabbing" the Af-On button when I see what I want to shoot and it not having anough time.

On the small pitches I wonder if a 1.4x Extender would have been better. I may have missed further away shots but would get more near shots.
 
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