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      10-27-2011, 12:11 AM   #12
Caspita
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Drives: 2011.99 E92 ///M
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Quote:
Originally Posted by Chewy734 View Post
It causes vignetting on my 17-40mm f/4L on the 5D2. On the 20D there is no vignetting.

Do you have the slim version, because I get no vignetting with the combo you mentioned above.
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