Alpen Chisos 10x50 ED Binoculars

Alpen Chisos 10x50 ED BinocularsThe jump from 42mm to 50mm objectives makes a real difference at dawn and dusk more light in, brighter image out. The Alpen Chisos 10x50 pairs that extra light gathering with ED glass and PXA phase coated prisms for the color accuracy and edge sharpness that 10x magnification demands, all in a magnesium chassis built for serious field use. Key Features 50mm Objective Lenses Gathers noticeably more light than 42mm models, keeping views bright and

The jump from 42mm to 50mm objectives makes a real difference at dawn and dusk — more light in, brighter image out. The Alpen Chisos 10x50 pairs that extra light-gathering with ED glass and PXA phase-coated prisms for the color accuracy and edge sharpness that 10x magnification demands, all in a magnesium chassis built for serious field use.

Key Features

• 50mm Objective Lenses — Gathers noticeably more light than 42mm models, keeping views bright and detailed in the low-light conditions where wildlife activity peaks.
• ED Glass — Extra-low dispersion elements eliminate chromatic aberration at 10x, keeping plumage colors true and fine detail sharp against bright sky and backlit canopy.
• PXA Phase-Coated BaK-4 Roof Prisms — Phase correction preserves resolution and contrast edge-to-edge for confident ID work at distance.
• Fully Multi-Coated Optics — Every air-to-glass surface treated for maximum light transmission and minimal glare.
• 6.5-Foot Close Focus — Tight enough for feeder birds, butterflies, and wildflowers — versatile across near and far subjects.
• Lightweight Magnesium Housing — Durable yet comfortable for all-day carry with textured grip panels.
• Waterproof & Nitrogen-Filled — Sealed against rain and humidity, internally fog-proof through rapid temperature swings.
• 18mm Eye Relief with Twist-Up Eyecups — Comfortable viewing for glasses wearers across extended sessions.

Ideal For

• Birders who want 10x reach with extra brightness — 50mm objectives outperform 42mm in dawn, dusk, and canopy shade where plumage ID depends on available light.
• Hunters who glass ridgelines and treelines in marginal light and want ED color accuracy to distinguish game from terrain.
• Wildlife observers who work from blinds or fixed positions and value brightness over ultralight portability.
• Astronomy enthusiasts looking for a step up from 42mm for brighter views of the Milky Way, open clusters, and bright nebulae.
• Glasses wearers who need comfortable eye relief without sacrificing field of view.