Pentax 10 X 50 DCF ED Binocular

Pentax 10 X 50 DCF ED Binocular

The PENTAX DCF ED 10x50 binoculars combine Extra Low Dispersion glass elements, full reflection and phase coated prisms, hybrid aspherical lens elements and fully multi coated optics. Built to last with JIS Class 6 waterproof construction, DCF ED binoculars feature a durable magnesium alloy body and a hard coating to protect exposed lens elements.ED Optical glass elements give truer color and sharper imagesFull-reflection prism coatings for maximum light transmission Hybrid Aspherical elements provide edge-to-edge sharpness Waterproof and Nitrogen-filled to handle extreme weather conditions Phase-coated prisms for high resolution, contrast and sharpness Close minimum focusing distance Fully multi-coated optics reduce glare while providing maximum light transmission Hard coatings on external lenses for durability Inner focus design for better balance and durability Magnesium alloy body for durability and light weight Full rubber housings improve grip and shock resistance Locking diopter ring with click stops holds your adjustments Long eye relief for comfortable viewing with or without eyeglasses Helicoid eyepieces for 4 click stops allow you to properly set eye relief Type: Roof-prism, center focusing (inner focus) Lens Construction: Hybrid aspherical lens Objective Lens: 4 elements, 3 groups Eyepiece Lens: 3 elements, 2 groups Magnification: 10X Objective Lens Diameter: 50mm Real Field of View: 5.0 degrees Apparent Field of View: 50 degrees Field of View at 1000m: 87m Field of View at 1000 Yards: 261' Exit Pupil: 5mm Eye Relief: 22mm Relative Brightness: 25 Diopter Adjustment Range: +/- 3m Eye Width Adjustment Range: 2.3" - 2.9" (58mm - 74mm) Focusing Range: 11.5' to infinity (3.5m to infinity) Eyepiece Ring: Helicoid (4 stops) Body Color: Dark green and black Waterproof: Nitrogen-filled, JIS Class 6, 1m depth Height & Width: 6.7" x 5.2" (170mm x 132mm) Thickness: 2.3" (59mm) Weight: 30.2 oz. (855g) Accessories: Objective lens caps, rain-shielding cap (eyepiece lens cap), case, neck strap