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Exit Pupil Diameter
Release date: 2017-06-27Nostradamus:
You can find a light spot when you observe eye lens of binoculars. That's Exit Pupil. Exit Pupil Diameter equals Objective Diameter divides Magnification. The bigger the Exit Pupil Diameter, the brighter people feel. However it's meaningless if the Exit Pupil Diameter is bigger than Human Pupil Diameter.
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