I know i should know the answer to this but . . . .
when focusing on a face with a 5diii, using all the sensors and allowing the camera to choose, does it focus on the nose (the nearest part) or the eyes
i have typically used a single point , in AI focus mode, focused on the eyes and then recomposed
i have noticed when i use an aperture that had a narrow DOF, especially when recomposing, that some of my portraits are subtley off, with focus on the wrong part of the face.
not sure if the focus is off from the start, if it is the recompsing that is throwing it off, or if it just is a matter of the subject (kid) moving just a bit in the context of narrow DOF
i am wondering if i should be using a larger group of focus sensors or all the sensors and if tha might help it lock and track a bit better