After weeks of looking, Nikon vs Canon, I have finally bought a second hand Canon 10D with 28-70mm USM lens off e-bay (1 year old hardly used from pro photographer, used as back-up camera). Well thats the cheap bit bought, lenses, well thats something else.... i'm looking for a tele zoom, looking at the 75-300mm USM. Has any one used one. Any comments would be welcome. Steve