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<blockquote data-quote="Bob Blaylock" data-source="post: 574520" data-attributes="member: 16749">Re: View finder dim with some sort of grid&nbsp; [USER=4923]@nickt[/USER] has it backward.&nbsp; Assuming a “G”-type lens, without an aperture ring, the lens should be normally stopped down to its smallest aperture, when not mounted.&nbsp; If it's not a “G” lens, then it will be at whatever aperture is set on the aperture ring.&nbsp; Pressing upward on the linkage, circled in red on these pictures, should cause it to open all the way to its largest aperture.[ATTACH]223737[/ATTACH][ATTACH]223738[/ATTACH]&nbsp; In normal operation, an SLR or DSLR holds that lever up, so that the aperture is wide open when you're looking through the viewfinder.&nbsp; In older SLRs, the camera would release that lever completely, when the picture was being taken, so that the aperture would close down to the setting selected on the aperture ring.&nbsp; Newer cameras with newer lenses release that lever only partially, using it to control how small the aperture is set.&nbsp; Anyway, an obvious possible cause of your dim viewfinder would be a failure on the part of either the lens or the camera to open the aperture all the way for viewing.&nbsp; If you lift this lever all the way on the lens, and the aperture remains closed, then that's the problem; the lens is defective.</blockquote>

[QUOTE="Bob Blaylock, post: 574520, member: 16749"] [b]Re: View finder dim with some sort of grid[/b] [USER=4923]@nickt[/USER] has it backward. Assuming a “G”-type lens, without an aperture ring, the lens should be normally stopped down to its smallest aperture, when not mounted. If it's not a “G” lens, then it will be at whatever aperture is set on the aperture ring. Pressing upward on the linkage, circled in red on these pictures, should cause it to open all the way to its largest aperture. [ATTACH=CONFIG]223737._xfImport[/ATTACH][ATTACH=CONFIG]223738._xfImport[/ATTACH] In normal operation, an SLR or DSLR holds that lever up, so that the aperture is wide open when you're looking through the viewfinder. In older SLRs, the camera would release that lever completely, when the picture was being taken, so that the aperture would close down to the setting selected on the aperture ring. Newer cameras with newer lenses release that lever only partially, using it to control how small the aperture is set. Anyway, an obvious possible cause of your dim viewfinder would be a failure on the part of either the lens or the camera to open the aperture all the way for viewing. If you lift this lever all the way on the lens, and the aperture remains closed, then that's the problem; the lens is defective. [/QUOTE]

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