With an eye for the discerning nature enthusiast - the Pentax 10x50 Z-Series ZD ED Binoculars feature multiple optical technologies to improve the image quality and ensure accurate colors in all weather and lighting conditions - especially in low light - such as dawn and dusk when many birds and game are most activeThe image-enhancement starts with the 50mm objective lenses that draw in copious amounts of light and extend the practical useable ability well beyond smaller objective optics The lenses are made with hybrid aspherical elements and extra-low dispersion (ED) glass The aspherical elements eliminate distortion around the edges of the lens for clear edge-to-edge views and corrects lens astigmatism that can prevent the ability to bring subjects into sharp focus ED glass corrects for chromatic aberration to ensure colors are accurately rendered Antireflective - fully multicoated optics maximize light transmission through the entire optical path to make views appear bright and crisp - especially in low light Finally - the BAK4 roof prisms are phase-corrected to enhance contrast and further correct chromatic aberration These technologies work together to produce bright and clear high-contrast images with virtually no distortion and accurate colorsComplementing the optical performance is a housing that is built for a lifetime of rugged outdoor use The chassis is made of a lightweight and durable magnesium alloy with a rubberized armor that protects against impacts while providing a slip-resistant grip The optical tubes are nitrogen filled for fog-resistant performance and O-ring sealed to make the binoculars submersible to as much as 33' A protective external lens coating helps repel dust - water - and oil to ensure obstruction-free viewing The larger objectives add weight and bias the center of balance forward which could lead to user fatigue and possible hand-shake - so for steadier views during longer glassing sessions - the binoculars
Features: Extra-Low Dispersion Glass, Phase-Corrected BAK4 Roof Prisms, Hybrid Aspherical Lens Elements, Fully Multicoated Optics, Angle of View: 50°, Nitrogen-Filled, Fog and Waterproof, Closed Bridge Configuration, Magnesium Alloy Chassis, Tripod Mountable, Twist-up Eyecups
Prism Type: Roof
Magnification: 10x
Objective Lens Diameter: 50 mm
Angle of View: 5 degrees (Actual)
Field of View: 262.5' @ 1000 yd / 87.5 m @ 1000 m
Minimum Focus Distance: 11.5' / 3.5 m
Exit Pupil Diameter: 5 mm
Eye Relief: 22 mm
Diopter Adjustment: Yes
Focus Type: Center
Fogproof: Yes - Nitrogen Filled
Environmental Protection: Water-Resistant (Unrated)
Dimensions: 6.7 x 5.2 x 2.3-inch / 17 x 13.2 x 5.8 cm
Weight: 30.2 oz / 856.2 g
