Reply To: Difference between 50mm and 56mm diameter lense

Forums Optics, Scopes, Rings, & Mounts Difference between 50mm and 56mm diameter lense Reply To: Difference between 50mm and 56mm diameter lense

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cally88
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As I understand it….

Depends on your application……the bigger the diameter then the bigger the exit pupil (like you said more light can pass through the lens resulting in increased luminosity) so if you will be shooting during the twilight hours then go bigger.  If you only plan on shooting during bright times (full daylight) then go with the smaller diameter since it will give you longer relief.