I have a Canon 7D and few lenses. The issue I’m experiencing for more than 2 years is related to autofocus with fast primes and can be replicated when camera is focusing at a non-contrast area. It doesn't matter what type of focusing / focusing point I use – I hear focus confirmation in the same manner as if camera has focused properly, but when I make the shot I see that it didn’t.
I've run several tests and identified that the lens AF is inconsistent comparing to Live View autofocus, when area in focus has no contrast. When I use lens AF in ~80% shots I'm getting front-focus issue.
Attached are crops from my tests, red square is the focusing point. Could someone confirm that this is normal behavior? Or should I sent my camera to Canon?
P.S. Shots were taken at ISO 800, 1/80 of a second, f/1.2 and f/1.4, using tripod.
I've run several tests and identified that the lens AF is inconsistent comparing to Live View autofocus, when area in focus has no contrast. When I use lens AF in ~80% shots I'm getting front-focus issue.
Attached are crops from my tests, red square is the focusing point. Could someone confirm that this is normal behavior? Or should I sent my camera to Canon?
P.S. Shots were taken at ISO 800, 1/80 of a second, f/1.2 and f/1.4, using tripod.