Pentax 8 - 16 X 21 UCF Zoom II Binocular

With a magnification range from 8X to 16X, the 8-16X21 UCF Zoom II binocular gives you incredible zooming ability with the convenience of a compact design. As with other UCF models, the 8-16x21 UCF Zoom II has an innovative dual-axis eye-distance adjustment system, high-refraction BaK4 glass prisms, multi-coated optical elements, and aspherical lens elements incorporated into the eyepiece optics. This portable, compact, user-friendly binocular is perfect for the viewer on the go - whether it be bird watching, sporting events, wildlife or indoor performance viewing.

• Central fingertip control includes, focus, locking diopter and zoom control


• Black rubber housing protects against dust and scratches


• Revolutionary dual-axis, single body housing with synchronized eyepiece adjustment to assure correct optical alignment for comfortable viewing


• Fast and easy adjusting center focusing for handling ease


• Helicoid style eyepiece rings for quick adjustment of eye relief


• Fully multi-coated optical eliminate harmful UV rays while improving light transmission and contrast with no flare or glare


• Inverted porro-prism design results in compact, light-weight body


• High-quality BaK4 prisms for maximum light transmission and illumination

• Binocular Type: Porro prism, Linked-dual-axis, Center focusing, Center zoom ring, Center diopter adjustment knob


• Lens Construction: 2 elements in 1 group; Eyepiece Lens: 4 elements in 3 groups


• Coating: Lens: Multi-coating Prism: Coating
  
• Magnification: 8 to 16X


• Objective Lens Diameter: 21mm


• Real Field of View: 5.0 degrees (8X) to 3.0 degrees


• Apparent Field of View: 40 degrees (8X) to 48 degrees


• Field of View at 1000m: 87m (8X) to 52m (16X)


• Field of View at 1000 Yards: 261' (8X) to 156' (16X)


• Exit Pupil: 2.6mm (8X) to 1.3mm (16X)


• Eye Relief: 14mm (8X) to 11mm (16X)


• Prism: Porro


• Relative Brightness: 6.7 (8X) to 1.7 (16X)


• Diopter Adjustment Range: +/- 4m -1 (8X)


• Diopter Adjustment: Center knob (pop up)


• Eye Width Adjustment Range: 56mm - 73.5mm


• Focusing Range: 3m to infinity


• Eyepiece Ring: Helicoid Type


• Body Color: Black


• Height & Width: 55mm x 111mm


• Thickness: 111mm


• Weight: 280g


• Waterproof: No


• Accessories: Eyepiece lens caps, Case, Neck strap