Situation: AF Case #6, erratic movement. AI Servo. 4- or 8-point expansion enabled.
AF/Meter start on the subject with centre AF point.
Subject (dogs at play, at great speed!) moves all over the field, I keep it within the 61 AF points and eventually I see a shot and press the shutter all the way. Despite the fact that the reticle display never moved from the original "lock on," the shot is properly focussed, though the subject is no longer "under" the original 5 points. The AF system seems to be "invisibly" tracking the subject and maintaining focus while confusing me (the operator) by displaying the point originally locked on rather than the current locked point.
Q: Is there a way to have the viewfinder AF display track and continuously display the active
AF point in real-time, rather than "going out" soon after it locks on? I've tried the 4-point (preferred) and 8-point expansion modes. Zone AF is too much of a blunderbuss for my purposes.
I haven't spelunked all the Custom Functions yet, but my reading of the manual suggests that my expectations and intuition are wrong - that is, the viewfinder AF squares do NOT track the active AF point after locking on and until the shutter fires. I have it set in AF5 to display in modes 1,2,4. That is, everything but "always on 61point." It does indeed display, but doesn't move with the subject. YES, I am using Ai Servo and it seems to do more than the manual suggests (p103/104).
Is there any way to get the VF reticle to track this way? I'm just getting to know the camera (frame #241 today!) but my hit-rate today for focus was nearly 95% - way up on the 40-60% for my 30d under the same circumstances.
For the moment, I'm just using the centre AF point in 4-way expansion mode for focus acquisition, and the camera seems to track correctly over the other AF points despite still showing the "active" AF point as the centre. In playback, on the LCD, the red square is where it should be, and rarely the centre point
This is more of a confidence thing than anything else - I'm conditioned to expect poor tracking performance, so I want the 'crutch' of knowing where the camera is aiming for. Am I making sense? Thanks for any insights.