Home Forums Hunting & Shooting Hunting Optics 8x vs 10x bino for all around hunting.

I am a big fan of 8X. I have a friend with the same Bino's in 10X, hard to hold and glass for long hours and not get eye fatique. What I give up in power if make up in light transmission and brightness. Both have 42 mm objective lens. The key is to keep the ratio above 5mm for objective lens divided by power. 5mm is the key number in that ratio.