- Aug 14, 2013
- Grants Pass, Oregon
One thing I have learned regardless of scope quality. The human pupil can only expand to roughly 5mm in low light. So with a 50mm objective anything over 10 power at last light is pretty much useless. With a 40 mm it’s 8 power etc. 56 will get you 11-12. Not a whole lot of difference. Glass quality is such a subjective thing I dont know how you measure it. Is there an actual standard for light transmission tests or is that just manufacturer data?
Here's what I have proven to everyone who has come to my porch and compared any scope of any brand on my deer antlers 131 yards away. If your scope is set on 10X and you loose the antlers to darkness, merely turn them up to 15X and you can see the antlers again.