I vote lens as well. I own an XT, an XTi and a 1DMKII. Without looking at the EXIF data or the file naming, I never know which body I was using to take particular shot. I can almost always tell the lens from aglance. My EF70-200mm F/2.8 L IS USM and my EF24-70MM F/2.8 L USM don't leave any doubt.Lens, lens,lens!


I don't think you'll find the1DMKII or the 1DMKIIN a big upgrade over your 40D. You will notice the little bitty LCD screen though!