A thorough conversation with Swarovski - Conclusion: Rookhawk knows nothing and is wrong about everything

[Beck]

also I gotta tel you, if you haven't looked at a Meopta lately you're making a mistake - not quite a swarovski, but very close

 

[WAB]

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That descibes hunting in Alabama and Mississippi for deer and hogs perfectly.

Agreed. It’s quite a shock when you see a buck in full light.

 

[Hunting Hitman]

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Boy, they sure are going to be disappointed I took my binos with me to Afghanistan...

SAVAGE!…I love it.

HH

 

[One Day...]

Yes, @One Day... had a very detailed explanation of all this in one of his posts on a thread but I can't remember which one.

The formula is simple: the diameter of light beam coming out of the ocular = the diameter of the objective / (divided by) the magnification.

56 mm objective / 8 magnification = 7 mm light beam through the ocular
42 mm objective / 6 magnification = 7 mm light beam through the ocular
24 mm objective / 3.5 magnification = 7 mm light beam through the ocular

7 mm is the maximum size the human pupil can dilate at dusk or dawn.

3 mm is the typical human pupil size in full sunlight. This is why a 1-8 x 24 DG scope works in full daylight (24 mm objective / 8 magnification = 3 mm light beam through the ocular), but why it must be cranked down to ~3x at dusk or dawn.

This is why typical European variable, when science still has something to do with product design, were 1.5-6x42 (standard optic for stalking); 2-8x56 (specialized optic for dawn or dusk - and sometimes night - stand hunting; 125-4x20 (typical for driven wild board and DG); etc.