My 28mm f/1.8 lens is back.
I had some suspicions it might be backfocusing a bit, so I had sent it out to Canon for an inspection and calibration.
I had the same thing done with my 85 f/1.8 last year.
Both lenses are in perfect condition now.

I shot this at f/2.5 @ 1/250s with light coming from my Sunpak fired into a silver umbrella.

Ian was nice enough to pose for me during the commercials of his Power Rangers show. =)