Alpen Chisos 12x50 ED Binoculars

12x magnification pulls distant subjects significantly closer than 8x or 10x, but that extra power amplifies every optical flaw. The Alpen Chisos 12x50 uses ED glass and PXA phase-coated prisms to keep images sharp and color-accurate at 12x, while 50mm objectives gather enough light to stay usable into twilight where lower-power binoculars would have the brightness advantage.

Key Features

• 12x Magnification — Significantly more reach than 8x or 10x for long-range observation, detailed plumage ID at distance, and tighter views on distant terrain features.
• 50mm Objective Lenses — Larger than 42mm for brighter images in marginal light, partially offsetting the brightness penalty that comes with higher magnification.
• ED Glass — Extra-low dispersion elements reduce the chromatic aberration that 12x power would otherwise amplify, keeping colors true and edges sharp.
• PXA Phase-Coated BaK-4 Roof Prisms — Phase correction preserves resolution and contrast edge-to-edge for confident detail work at distance.
• Fully Multi-Coated Optics — Every air-to-glass surface treated for maximum light transmission and minimal glare.
• 8.2-Foot Close Focus — Versatile enough for nearby subjects despite the long-range emphasis.
• Lightweight Magnesium Housing — Durable yet manageable for extended sessions with textured grip panels.
• Waterproof & Nitrogen-Filled — Sealed against rain and humidity, internally fog-proof through rapid temperature swings.

Ideal For

• Long-range birders who want to ID shorebirds across mudflats, raptors on distant perches, or waterfowl at the far end of a lake where 8x and 10x fall short.
• Hunters who glass wide-open western terrain (ridgelines, basins, and clearings), where the extra reach of 12x reveals game that lower magnifications miss.
• Wildlife observers who work from fixed positions and want maximum detail on distant subjects.
• Astronomy enthusiasts who want tighter views on the moon, Jupiter's moons, and bright star clusters than 8x or 10x can deliver.
• Experienced users comfortable managing the narrower field of view and steadier hand that 12x demands. This is a step up in reach, not a beginner's binocular.