This lens is kept attached to my Canon EOS 20d, ready for action. It is the ideal "kit lens": sharp, well made, ideal focal length from genuine wide angle to useful telephoto. Image stabilisation is excellent. The only caveat is that there is some barrel distortion at the extreme wide angle settings but this does not spoil the image unduly. The ideal companion lens for this is the superlative f/4 70-200 L-series which is the best bargain in the Canon lens range.