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I have a thread running in the center fire subforum about picking an optic for an AR. http://www.calguns.net/calgunforum/s...d.php?t=793532
I've noticed that Trijicon publishes their exit pupil numbers as idealized/theoretical values, with the formula being exit pupil = objective size / magnification. Aimpoint magnifier's published exit pupil number is actually bigger than physically possible. Eotech G33 doesn't have published exit pupil number.
TA33: 3x, 30mm objective, published exit pupil of 10mm
TA11: 3.5x, 35mm objective, published exit pupil of 10mm
TA31: 4x, 32mm objective, published exit pupil of 8mm
Aimpoint Magnifier: 3x, 20mm objective, published exit pupil of 7mm
Eotech G33: 3x, 30mm objective, published exit pupil of ?
Can my fellow CGers with these scope help determine their experimental values? And while you're at it, would you mind measuring the exit pupil circle size when measured slightly outside of the exact eye relief distance? This would give us an idea of how much FOV you would loose when your head isn't at the exact eye relief position.
If you could post the data in the following format, it would be great.
exit pupil = ?mm at eye relief
exit pupil = ?mm at eye relief + 0.5in
exit pupil = ?mm at eye relief + 1in
The following is taken from BigJimFish's thread at ARFCOM on how to get these values. http://www.ar15.com/mobile/topic.htm...421244&page=17
I've noticed that Trijicon publishes their exit pupil numbers as idealized/theoretical values, with the formula being exit pupil = objective size / magnification. Aimpoint magnifier's published exit pupil number is actually bigger than physically possible. Eotech G33 doesn't have published exit pupil number.
TA33: 3x, 30mm objective, published exit pupil of 10mm
TA11: 3.5x, 35mm objective, published exit pupil of 10mm
TA31: 4x, 32mm objective, published exit pupil of 8mm
Aimpoint Magnifier: 3x, 20mm objective, published exit pupil of 7mm
Eotech G33: 3x, 30mm objective, published exit pupil of ?
Can my fellow CGers with these scope help determine their experimental values? And while you're at it, would you mind measuring the exit pupil circle size when measured slightly outside of the exact eye relief distance? This would give us an idea of how much FOV you would loose when your head isn't at the exact eye relief position.
If you could post the data in the following format, it would be great.
exit pupil = ?mm at eye relief
exit pupil = ?mm at eye relief + 0.5in
exit pupil = ?mm at eye relief + 1in
The following is taken from BigJimFish's thread at ARFCOM on how to get these values. http://www.ar15.com/mobile/topic.htm...421244&page=17
Originally posted by BigJimFish
Exit pupil can be roughly tested by placing a brightly illuminated object at some distance from the optic and measuring the disc of light transmitted through the scope at its smallest point. Below is a photo of my measurement setup.
