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| p.2 #8 · 5DmkII has super AF!!! |
Counterpoint: I just got back from a wedding reception with a typical exposure of f/2, 1/150, ISO 3200. Barely half of my photos are in focus with a 5D II and my 100/2. This was all center-point. The issues Marcus points out with focus-recompose defined my night.
Been there, I totally understand.
Yep, the center point on the 5d2 is good and I have confidence in it. But if the subject is moving, you can get in trouble quickly, unless you're happy with the focal point staying exactly in the middle of the frame. When squatting down in the aisle as a bride walks toward you, trying to focus on her face, recompose, and shoot before she moves too far, can be a nightmare. And of course you have to take multiple pictures because one might have eyes closed or an awkward expression.
The thing for everyone to remember is that people who report low% keepers with the 5d2 and center point, it isn't that the camera only focuses right 20% of the time, it's usually that 80% time we are taking pictures of things that move/sway/breathe/walk, as well as ourselves swaying, between the time of focusing and the shutter firing.
So we have to ask ourselves honestly, are we taking pictures of things that don't move, or can be asked to stand still (museum, landscape, buildings, model in studio); or are we taking pictures of more dynamic situations where we are capturing moving subjects, perhaps with fleeting facial expressions, that don't allow the possibility of recomposing after focusing, before moving out of focus?
The answer to this question is the most basic answer to the often repeated '5d3 vs 5d2?'.