I have a somewhat unique problem: I need a lens rec for shooting bird dog field trials. I need one lens as I will be shooting from horseback and don't want to risk dropping a lens from that height while changing lens. I have a Canon 35-135 and a Canon 70-300 but I fear that the first might not be long enuf and the second not wide enuf. I will be photographing dogs standing on point and once I get in position, I cannot move much if at all, thus the 70 might not be wide enuf. (There are other riders on HB plus one cannot crowd the judges or interfere with the pointing dog and its handler.) OTOH, I will be photographing dogs running at some distance, sometimes at 600 yards or more thus the 135 might not be quite long enuf. I have been thinking of the 55-250 but ideally, a 28 to 300 might be just the ticket. Any recs, Canon or third party? FYI, I seldom print larger than 8x10 and I do have a website that I may place more pics on. Thanks in advance!! Harry

