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re: 56mm scope, anyone use one?

Posted on 12/21/16 at 11:15 am to
Posted by Barf
EBR
Member since Feb 2015
3727 posts
Posted on 12/21/16 at 11:15 am to
The brightness of your image is a product of exit pupil. Ep is determined by dividing the objective lens diameter by the scope's magnification. Tube size matters very little.
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