Thread: Low light hunting scope circa 2021 ?

Originally Posted by Woody

Vari power scope has more lenses than fixed power scope or binos. More lenses mean more internal reflective l7ens surfaces and lens coatings all reducing light throughput . 30mm tube allows greater diamete erector lens which helps light transmission too.
Large high quaility lenses esp say 56 mm objective allow good light at 8x wheras 42 mm objective with equivalent lenses and coatings can only be equal at 6 x.

Not sure I agree there . From my understanding it is the lense coatings that increase light transmission . The difference being the coatings used and not all scopes have coatings on the internal lenses , and it is that lack of internal lense coatings that reduces light transmission .
You will probably find that cheaper scopes don't have internal lenses coated , just the external , hence cheaper price . Most pricier scopes will specifically mention all lenses coated in the specs.