Thread: 56mm objective - How many of us use them?

Im going from memory here...so correct me if I'm wrong. But about 20 years ago I was obsessed with big optics. Then someone explained that the eye can only handle 7mm of light through a scope.

So that is basically your objective/magnification e.g.

A 6x42 scope would have 7mm (42mm/6=7mm)

Or

4x32 has 8mm (32/4=8mm) which is a little more light than your eye can use.

Now a 8-32x56 becomes very interesting, as on 8 power its awesome, giving the perfect score of 7mm....but on anything higher it loses out big time e.g. on 32 its a pathetic 1.75mm which is next to useless at dusk or dawn.