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Focusing near vs far & exit pupil question.

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/04/2010 at 10:28
tpcollins View Drop Down
Optics Journeyman
Optics Journeyman

Joined: January/12/2009
Status: Offline
Points: 386
Two questions:
it seems like there is more "focus range"  when I'm view something at 50 yards versus a much shorter amount of knob range when viewing something at 500 yards. Is there a specific reason in physics for this or am I just imagining it? 
I have a 3x9x36mm rifle scope - is the exit pupil 12-4 or doesn't that apply to rifle scopes?  Thanks.
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