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Rifle Scopes : What determines image size?

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Author: koshkin
Subject: What determines image size?
Posted: December/01/2013 at 00:24

Originally posted by MBar308 MBar308 wrote:

Do you have any thoughts on this matter Koshkin?

As a matter of fact I do.  Generally, if you have a question for me, start a thread and shoot me a PM with a link.  Otherwise, I might miss it.

The overall imae size is strictly a function of eye relief and eyepiece diameter.  Your eye has a particular field of view and the more of your eye's FOV the eyepiece takes up the larger the image will look.

The presence/size of the black ring around the image is a function of the optical design of the eyepiece.

ILya

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