·PRODUCT HIGHLIGHTS
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·Extra Low-Dispersion Glass
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·Phase-Corrected BAK4 Roof Prisms
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·Hybrid Aspherical Lens Elements
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·Fully Multicoated Optics
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·Angle Viewing: 50°
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·Nitrogen-Filled, Water and Fogproof
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·Closed Bridge Configuration
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·Magnesium Alloy Chassis
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·Tripod Mountable
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·Twist-Up Eyecups
·OVERVIEWThe Pentax 10x50 ZD ED Binocular features multiple optical technologies to improve the image quality and ensure accurate colours in all weather and lighting conditions. The image-enhancement starts with hybrid aspherical lens 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 colours are accurately rendered. Anti-reflection 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 accurate colours and virtually no distortion.Complementing 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 rubberised armour that protects against impacts while providing a slip-resistant grip. The optical tubes are nitrogen filled for fogproof performance and O-ring sealed to make the binocular submersible to as much as 3.3'. An protective external lens coating helps to repel dust, water, and oil to ensure obstruction-free viewing. For longer glassing sessions, they are tripod mountable with an optional adapter.Optical Performance
·10x magnification
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·50mm objective lenses
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·BAK4 Roof prism optical path
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·Anti-reflection fully multicoated optics
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·Extra-low dispersion (ED) glass reduces chromatic aberration for sharper images with accurate colour
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·Phase corrected prisms produce high-contrast images with true colour rendition
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·Hybrid aspherical lens elements correct for spherical aberrations to reduce distortion at the edges of the lens and corrects for astigmatism that can prevent sharp focusing
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·262' field of view at 1000 yards
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·50° wide angle of view
·Use and Handling
·Closed bridge configuration
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·Large knurled centre focus wheel
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·Right-eye diopter adjustment
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·22mm long eye relief, 5.0mm exit pupil
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·Twist-up eyecups for use with or without eye wear
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·Tripod mountable with optional adapter
·Construction Details
·Lightweight and durable magnesium alloy housing
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·Rubberised armouring protects against impacts and provides slip-resistant grip
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·Nitrogen-filled, fogproof and submersible to 3.3' (1m)
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·Internal focusing system helps to maintain waterproof seals
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·Dust/water/grease repellent coatings keeps the optical surfaces clean
·SPECIFICATIONSPrism Type Roof
Magnification 10x
Objective Lens Diameter 50 mm
Angle of View 5.0° (actual)
Field-of-View 262.5' @ 1000 yd / 87.15 m @ 1000 m
Minimum Focus Distance 11.6' / 3.54 m
Exit Pupil Diameter 5.0 mm
Eye Relief 22 mm
Interpupillary Adjustment Not Specified By Manufacturer
Dioptric Correction Not Specified By Manufacturer
Focus Type Centre
Tripod Mount Yes (Adapter Optional)
Dimensions 6.7 x 5.2 x 2.3" / 17.02 x 13.21 x 5.84 cm
Weight 30.2 oz / 856 g