Title: sharp and smooth
Product review: The built quality is exceptional. sharp, smooth and fast AF. Be sure to update your k10D firmware to v 1.3 before using this lens, so you wont be like me at first scratching my head wondering why a lens this expensive is noisy and vibrates. The lens is made in vietnam-nothing wrong with that, for some reason I was under the impression it was made in Japan.7/16/11 UpdateThis lens did not last, been repaired/replaced twice already because it quit autofocusing. Used it from k10 to K5. Changed my star rating from 4 to 2
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