Binoculars

Decoding the Numbers: 8x42, 10x42, 12x50

The first number is magnification; the second is objective lens diameter in millimeters. 8x42 delivers a wide, steady view that’s easy to hold freehand — the do-everything choice. 10x42 trades field of view for reach, the most popular western hunting format. 12x50 and up pulls in distant detail but really wants a tripod. Bigger objectives gather more light for dawn and dusk at the cost of weight. When in doubt, 10x42 for open country, 8x42 for timber and all-around use.

Glass Quality: Where the Money Goes

Two binoculars with identical numbers can perform worlds apart. Price buys better glass (ED/HD low-dispersion elements that kill color fringing), better coatings (fully multi-coated lenses transmit more light), and better prisms (phase-corrected BaK-4). The practical differences show at the edges of the day — budget glass goes dark at dusk while quality glass keeps resolving antler detail. The mid-tier (Vortex Diamondback HD, Leupold BX-2) is where value peaks for most hunters.

Hunting Binoculars vs. General Purpose

Hunting binoculars prioritize ruggedness: waterproof/fogproof nitrogen or argon purging, rubber armor, and tripod adaptability for long glassing sessions. Birding and general-use glass often favors close-focus distance and wider fields. If the binocular will ride in a chest harness through brush and weather, buy hunting-grade construction — the warranty matters too, and Vortex’s unconditional VIP warranty is a category benchmark.

Rangefinder Binoculars

Combining 10x42-class glass with a built-in laser rangefinder eliminates the spot-then-range device swap — a real advantage when game is moving. The Vortex Fury HD and Sig KILO Canyon lead the category. They cost roughly what good binoculars plus a good rangefinder cost separately; serious western hunters consistently rate them worth it. See our rangefinders page for the full breakdown.

Frequently Asked Questions

Are 8x42 or 10x42 binoculars better for hunting?
10x42 for open western country where you glass long distances; 8x42 for timber, stand hunting, and anyone bothered by hand shake. The 8x’s wider field finds moving game faster; the 10x resolves more detail at distance. If you hunt both, 10x42 is the more common single-binocular compromise.

Why are some binoculars so much more expensive with the same magnification?
Glass and coating quality. Premium ED glass, superior multi-coating, and phase-corrected prisms deliver brighter, sharper images — especially in low light at dawn and dusk when game moves. The numbers describe the format; the price describes the optical performance inside it.

Do I need waterproof binoculars?
For hunting, yes — waterproof and fogproof (nitrogen/argon purged) construction is standard on hunting glass and prevents internal fogging from temperature swings, which ruins a binocular permanently. Nearly all quality hunting binoculars include it.

Browse Optics

All Optics • Rangefinders • Scopes • Spotting Scopes • Trail Cameras

See Also

Vortex • Leupold • Hunting Gear • Hunting Rifles