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Old 24th July 2005   #1
ptwong
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Hi people, got another question. Went to take some pics with my 70-200 f2.8. and this question pop into my mind. When do you send your lense or body for a checkup? (was wondering if my lense have a focusing issue)

thanks for your help
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Old 24th July 2005   #2
DEADMETAL
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Trying using ur 70-200mm on tripod. Might be motion blur due to the weight of the lens.
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Old 24th July 2005   #3
ptwong
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Originally Posted by DEADMETAL
Trying using ur 70-200mm on tripod. Might be motion blur due to the weight of the lens.
thanks for the tip, don't really think it's a weight issue. using shutter speed of up to 1/500 or 1/1000 for shorter part of range
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Old 25th July 2005   #4
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Gosh i brought my 70-200mm f/4. FInd it pretty heavy, no wonder all my shots not that sharp leh...
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Old 25th July 2005   #5
ptwong
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Originally Posted by rickygck
Gosh i brought my 70-200mm f/4. FInd it pretty heavy, no wonder all my shots not that sharp leh...
you need to take into consideration the shutter speed also. If you find your f4 heavy, wait till to try the 2.8 IS version ha....
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Old 25th July 2005   #6
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The longer the zoom range the more obvious the motion blur, unless u using a very fast shutter speed. Weight is one of the factor, but f4 consider quite light so no worries on that. But for f2.8 it weight almost 2 X the f4, not to mention the f2.8 IS. It's even heavier than a 100-400mm L lens.

If you wanna do a test on sharpenss of your lens, I suggest you do it on a bright sunny day with tripod.
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Old 25th July 2005   #7
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Originally Posted by rickygck
Gosh i brought my 70-200mm f/4. FInd it pretty heavy, no wonder all my shots not that sharp leh...
The 70-200 f4 is not that heavy what. Quite comfortable to handhold. The f2.8 is a different story of course.
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