Um, Is it just me but you say you were lighting this with speed lights and have stated a shutter of 1/800??
I thought the 50d had a max flash sync of 1/250??
(ps I thought it plenty sharp enough, but without the full size file its hard to tell)
Greg Bartle,
I have a Pentax and I'm not afraid to use it.
Pentax K5
Sigma 10-20 | Tamron 17-50 F:2.8 | Sigma 50 F:1.4 | Sigma 70-200 F:2.8 Plus a bunch of Ye Olde lenses