Can Canon AF do real time tracking of objects (not just faces,eyes,cars,animals etc)?

Joe Reynolds wrote:

>>>And I too use Spot with BBAF, but I keep it in Servo so I can track that spot if need be (and if I need to lock focus, I just lift my thumb from the back button). Works tremendously well.<<<

R2,

The problem is if one becomes accustomed to servo tracking while holding the bb down continuously, it is too easy to do so when not wanting to track if in servo. Thus I keep servo off on the other bb so I can hold the button down continuously and the focus point stays fixed at initial distance even when recomposing. So I am always holding either bb focus button down continuously.

Hope that description makes sense .

But, whatever works.

So you have "Subject Detect" (with servo tracking) on one back button, and "One Shot" (with Spot) on the other, correct? And you want the pressing action to be the same for both buttons, right? That certainly works.

Except one would be missing out on Spot AF with Servo (no subject tracking). Which I use a LOT, but you may not.

Otherwise, our focusing actions are actually very close.

I keep "Subject Detect" (with servo tracking) programmed to the AF-ON button, and Spot AF with Servo programed to the ( * ) button. I usually can tell beforehand which I'll need to use, and then implement the appropriate method. With either button, if I feel that I want to stop focus (lock it at a particular distance), I just lift my thumb and it locks (press again to re-activate AF), etc etc etc.

For instance with say a Landscape shot, I'll just put the spot on some bushes, rocks, fences, houses, just about anything, and then do a quick press and release (and focus is locked at that distance), no matter how many shots I take or how much I recompose. Voila!

Having both Servo and One Shot's functionality on a single button (and entirely separate from Subject Detect with servo tracking) really is powerful. Highly recommended!

R2