..a week before I go shoot a Jamaica wedding, here is a detail of a shot from my 24-70 f/2.8L lens (click, then view the full original size of this detail):
One of a series of many shots, all the same. And here is a shot from Kristof’s same lens (but the MkII), also one of a series, all the same:
Taken on the same 5D MkIII (and they show the same on my 1Dx). Good methodology (fast shutter, one central small (“spot”) focus point aimed consistently at a contrasty area, good light).
Now, can my lens be tuned, adjusted, calibrated, repaired? We shall see – time will not allow this I fear, so it may be a drive to the shop for me to buy a new lens.
This is the kind of thing pros do – that’s one reason you pay them.