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elite 4200 3-9X40 vs 3-9X50

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/29/2009 at 10:35
djzed14 View Drop Down
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Anyone tested these for low light conditions.
Probably be set to 6X on both. How much more light does the 50 let in?
Anyones experiences?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/29/2009 at 10:37
djzed14 View Drop Down
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sorry meant 2.5-10 mag on the 50mm
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/29/2009 at 13:34
Chris Farris II View Drop Down
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3-9X50 The power is 3-9 the 50 is the lens diameter in millimeters. You take the Objective lens diameter and divide it by the power the scope is set on. 50 / 6 =8.3mm of light is what the scope is transmitting though the eyepiece with a 50mm objective set on 6 power. 40 / 6 = 6.66mm. The human eye in its absolute prime can only dialate the pupil to 7mm. So in all reality between those two scopes on 6 power and below neither will appear brighter than the other. A bigger objective comes into play more on the high powers.



Edited by Chris Farris II - July/29/2009 at 13:35
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