I bought it for the 60D as a standard lens. Everything is fine, but where is the sharpness inherent in L-cams. Only the owners of the FF praise him, it is not fully disclosed on the crop. I do not recommend taking it to crop owners. On the Mark, it is not bad, but on a crop it will be slightly better than a whale lens. It turns out that this is a whale in a durable construct with dust and moisture protection. I'm thinking of buying a 70-200mm F4L USM. There, everything is in order with sharpness, and the background washes more beautifully.
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