Yesterday, I was shooting (studio strobes only) with a fixed 50mm 1.8, one subject — full body head to toe.
I was having problems getting the face/ eyes consistently sharp.
My assistant offered a few suggestions, but I don't really know issue is solved, but these do help, any other ideas on this? These were his suggestions for now:
1) Use the 24-70 L lens I have as that is better glass. ( I own this lens too, and use it with stabilization on)
2) Shoot at 125, not 60 which I usually do.
3) Set the focus points to all, not just one, which I usually do — I usually just use one focus point, the one at the top center near the eyes. He says use as many as you can.
4) Get a Mark 3 which is better at focus.
5) Consciously hold the camera very steady, which I admittedly don't pay enough attention to doing consistently. I always shoot handheld.
I always thought the shooting at 60, and not worrying about shake was not a big deal as the strobes (no ambient coming through windows, maybe a very small tad), should overpower everything and get the face sharp). So these suggestions by my assistant are good, but they did not solve the issue 100% — even employing all his ideas. Note, that this focus issue disappears if I shoot a tight headshots. It's some about getting the face tack sharp on a head to toe shot that is the issue.