Quote:
Originally Posted by Dirk
and the beauty of IS : 99% of the pictures are perfect sharp ( without IS on 250 mm there is camarashake possibilty , thus can IS do the trick
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If you think IS can work miracles on a handheld 250mm (x1.6=400mm) you'll be in for a nasty surprise. IS is virtually ineffective above 200mm effective focal length. It cannot cope with the (leveraged) amplitudinal shake at longer effective focal lengths.