dstoenner
Silver $$ Contributor
The sightron has a 60mm front lens so at 50 it has an exit pupil of 60/50 or 1.2 mm exit pupil. A little bigger than the size of a human pupil in bright sunlight. That is why you “see” it brighter. The GE at 55 is 52/55 exit pupil or .945 mm which is smaller so it seems less bright. I run mine at 40x so I have an exit pupil of 1.3 mm so I have good latitude of head position with as bright as it will be.I felt it was due to the HD glass. Sightron 10-50 also has a small exit pupil also yet the image quality doesn’t darken the same as the GE. I’m not expert on these matters just a user of both scopes and that’s just my opinion.
Jim
And the s3 sightrons have a level of ed glass not as good as higher grades but good and ed glass doesn’t make a scope dark.
David