A couple of week after I got my camera I was looking for a longer lens, went for a Sigma 70-300 APO DG Macro, no problems with it, but now I'm going for the Canon EF-S 55-250 IS, reasons being it covers the gap between my 18-55 EF-S and the 70-300 Sigma, plus it as IS, and I think it would be the lens that I would keep on my camera.