Originally Posted by DollarShort
Originally Posted by JohnBurns
LOL.

No.

Once the optic exit appature exceeds the shooters pupil there is nothing to be gained as far a "brightness".

But an increase in magnification brings an increase in brightness as 10X is 10 times as bright, sort of.

Just like being 10 times closer is brighter.

Physics, it's fun.
It is not the magnification that makes the image brighter. Magnification only makes it bigger. And easier to see, given enough light.
It’s aperture dependent.
At night... Assuming your target isn’t producing it’s own light, a 50mm scope at 10x will be much brighter than a 50mm scope at 50x.
Just like 10x in a 20mm scope will be much dimmer than 10x in a 50mm scope.

Nope.

The bigger objective brings a bigger exit aperture and better resolution.

Magnification brings image brightness.

The issue is when you eye pupil is expanded bigger than the exit aperture and this causes a feeling of darkness.

Last edited by JohnBurns; 11/23/22.

John Burns

I have all the sources.
They can't stop the signal.