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Message: <blockquote data-quote="480sparky" data-source="post: 598840" data-attributes="member: 15805">This is incorrect.  Light leaks through the viewfinder is always a possibility.  For most short-duration exposures, light leak is not an issue, especially when your eye is at the VF blocking 99% of the light.  But for long exposures, especially when your eye is not at the VF, it can become an issue. If there's an 'automatic blind or shutter', there's no reason for the little plastic eyepiece covers to be included, and no reason for top-end DSLRs have manual eyepiece shutters built into them.</blockquote>