I'm very impressed with this lens. Before I bought it, I read reviews on various websites, some saying it was brilliant, some saying it wasn't very sharp, too big, too heavy etc.I took the plunge and bought one and haven't regretted it. I've used this on d40 and d300 bodies and it works superbly on both.
The autofocus is very fast, quiet and accurate. The VRII system is also very impressive allowing very slow shutter speeds - I've had sharp, handheld images at 1/30 sec at 300mm which would be completely impossible without it. As for the size and weight, for a lens with a maximum focal length of 300mm with a built in focusing motor and an optical stabilisation system it's not really a problem (the canon equivalent is the same size ... Read More:
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