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Old Aug 18, 2006, 8:40 AM   #1
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Can anyone post any pics (with selected EXIF data), where the IS feature of this lens has come into it's own. i.e. where the picture wouldn't have been any good without IS. Can anyone convince me to buy one over a Sigma 17-70???
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Old Aug 18, 2006, 9:34 AM   #2
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pjackson wrote:
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... i.e. where the picture wouldn't have been any good without IS
This is hard to show since it depends on the photographer...

For example if I set my camera down on a table to take a picture, there's no handshake involved then why require IS? You only need IS if you attempt to hold the camera at the slower shutter speed!
-> I have taken numerous photos at night with no IS whatsoever on the lens by using this method (no tripod) - @ 1s to 3s exposure I doubt that even IS help!
http://www.stevesforums.com/forums/v...amp;forum_id=8

What you can determine is this from the measured MTF's: the 17-85 is better at the WA and the 17-70 is better at the tele... The Canon also comes with USM which is not offered on the 17-70. It's really up to you if you need or want thoses feature really and pay for it
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Old Sep 2, 2006, 10:40 PM   #3
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Try this link:

http://www.stevesforums.com/forums/v...mp;forum_id=37
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