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Thread: New lens don't look normal

  1. #1

    Default New lens don't look normal


    I just brought a 17-40mm L f4 USM and realize when I look thru the lens (not the viewfinder) the hole doesn't seem very round {circular} in shape. May I know is it normal.

  2. #2
    Moderator catchlights's Avatar
    Join Date
    Sep 2004
    Punggol, Singapore

    Default Re: New lens don't look normal

    You are looking at the aperture diaphragm, if it is a bit lopsided, is normal.
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