Alpen Chisos 10x42 ED Binoculars

When you need 10x reach for distant plumage ID but can't afford color fringing to blur the details, ED glass is the answer. The Alpen Chisos 10x42 pairs extra-low dispersion glass with PXA phase-coated prisms to deliver the color accuracy and edge sharpness that 10x demands — in a lightweight magnesium chassis that handles all-day field use.

Key Features

• 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 under overcast skies and forest canopy.
• 6.5-Foot Close Focus — Tight enough for feeder birds, butterflies, and wildflowers at arm's length — versatile across near and far subjects.
• Lightweight Magnesium Housing — Durable yet comfortable for all-day carry with textured grip panels for secure handling in wet conditions.
• Waterproof & Nitrogen-Filled — Sealed against rain and humidity, internally fog-proof through rapid temperature swings.
• 16mm Eye Relief with Twist-Up Eyecups — Comfortable viewing for glasses wearers across extended sessions.
• 305ft Field of View at 1,000 yds — Wide enough to track birds and scan open terrain at 10x without constant repositioning.

Ideal For

• Birders who want more reach — 10x pulls distant subjects closer than 8x while ED glass keeps the color accuracy needed for plumage ID.
• Hikers and nature observers who want ED glass quality in a lightweight, weatherproof package for all-day trail use.
• Hunters who glass ridgelines and treelines in variable light and need color-accurate, high-contrast views at distance.
• Glasses wearers who need comfortable eye relief without sacrificing field of view.
• Mid-range upgraders stepping up from non-ED optics and wanting a meaningful improvement in sharpness and color fidelity at 10x.