binocular viewing clarity

mr.marcus · Guest

16x50 bushnell binoculars versus 10x50 simmons why does the 10x50 binoculars seem to have better clarity? does it have anything to do with bak 4 versus bak7 systems? Confused

opticsplanet.com · Posted: Thu Jan 12, 2006 8:56 am Post subject:

Hi

Yes, Bak-4 will give you better image quality, but some of the difference in brightness you are seeing is also a matter of exit pupil (divide first number into the second number). Exit pupil is a rough guide to image brightness and though there are other factors involved in image brightness, exit pupil can still be useful tool for comparison.

A 10x50, with an exit pupil of 5, will be brighter than a 16x50, with a smaller exit pupil 3.1. Might not be noticed on a bright day, but you will definitely see a difference in low light situations.

You'll also find the 10x much easier to hold and steady.
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