Wilt wrote in post #17107273
I dare say that most folks do some shifting of the frame before shooting, unless they often commit the sin of bullseye'ing their subject and/or they simply never adjust framing for best composition! Oftentimes our point of focus can be on very small items that do not fall exactly on an AF point, so when we choose the 'closest AF point' to focus we end up with some subtle adjustment in framing...even if we shift a degree or two , we do NOT necessarily aim precisely at the same point in the scene when we are taking 4-5 shots in succession! The chosen AF zone can suddenly be seeing air next to the real aim point when the shutter is pressed!
It depends on how many points you have. My 7D has 19 points. Much easier to put a point over what I want focused, without shifting the camera, than if I had a 6D with 11 points. Or my T2i with 9 points. It would potentially be even easier with a 5D3 or one of the 1D bodies that have "a billion" points. The reason I don't focus recompose is that my personal experience is that I get a lot more out of focus shots. I'd rather take the time to rearrange my subjects, or move myself to use a point that will be there at shutter actuation. Yes, I may shift, they may shift, lightning may strike. Those things can happen, and the shifting is more likely, when you focus/recompose. I refocus between all single shots. If I'm shooting action, and possibly doing 4-5 successive shots, or if I'm tracking a subject waiting for the right moment, then I'm in servo mode, with expanded focus point mode and I don't let off the focus button (back button focus). I never use the zone focus mode, or any other mode that allows the camera to decide where to focus.