I want to love this lens so much because the optics are amazing. The colors are rich and the contrast is great...so is the flare control and the sharpness. But The focus inconsistency is driving me insane. Using center focus points on my 5d mark 3 it seems to be focusing well most of the time. Using outer cross type points, it's front focusing intensely. Focusing with the center point and recomposing yields an in focus photo while using an outer point falling on the focus area does not.
I have experienced this type of issue so many times, with nearly every canon camera I've ever owned, however I haven't noticed this with my 5d mark iii until I mounted this lens. I have no idea whether it's the lens or camera, but I don't recall having this issue with other lenses (except other 50mm lenses....). It's not user error, I've tested it on a tripod, and I shoot my 85L at f1.2 hand held all the time with no issues. I have no idea whether to send the camera in for calibration or the lens.
Frustration. Why can't things just work.