This is a great lens. Focusing is quick and accurate. Excellent picture quality, I haven't had it for a very long time and I still play with it. The handy photo below, taken on the beach in very low light, plus some egrets close enough to photograph the bird. When I think of how heavy it is, it all vanishes when I think of F2.8, which gives me extra light for crisp, clear shots on the move. It will be a great companion for the K-1 if I can get it, but it works great with my K-3.
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