Phase-Corrected BAK4 Roof Prisms, Hybrid Aspherical Lens Elements
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Designed for nature enthusiasts and bird watchers, the Pentax 10x50 Z-Series ZD WP Binocular features multiple optical technologies to improve the image quality and ensure accurate colours in all weather and lighting conditions - especially in low light, such as dawn and dusk when many birds and game are most active.

The 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 that 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. Anti-reflect fully multicoated optics maximise 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 colours.

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'. A protective external lens coating helps to repel dust, water, and oil to ensure obstruction-free viewing. The larger objectives add weight and bias the centre of balance forward which could lead to user fatigue and possible hand-shake, so for steadier views during longer glassing sessions, the binocular is tripod mountable with an optional adapter.

Key Features

Optical Performance
  • 10x magnification
  • 50mm objective lenses
  • BAK4 Roof prism optical path
  • Anti-reflection fully multicoated optics
  • Phase corrected prisms produce high-contrast images with true colour rendition
  • 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
  • 262' field of view at 1000 yards
  • 50° angle of view
Use and Handling
  • Closed bridge configuration
  • Large knurled centre focus wheel
  • Right-eye dioptre adjustment
  • 22mm long eye relief, 5.0mm exit pupil
  • Twist-up eyecups for use with or without eye wear
  • Tripod mountable with optional adapter
Construction Details
  • Lightweight and durable magnesium alloy housing
  • Rubberised armouring protects against impacts and provides slip-resistant grip
  • Nitrogen-filled, fogproof and submersible to 3.3' (1m)
  • Internal focusing system helps to maintain waterproof seals
  • Dust/water/grease repellent coatings keeps the optical surfaces clean

Specifications

Prism TypeRoof
Magnification10x
Objective Lens Diameter50mm
Angle of View5.0° (actual)
Field-of-View262.5' @ 1000 yd / 87.15 m @ 1000 m
Minimum Focus Distance11.6' / 3.54 m
Exit Pupil Diameter5.0  mm
Eye Relief22  mm
Interpupillary AdjustmentNot Specified By Manufacturer
Dioptric CorrectionNot Specified By Manufacturer
Focus TypeCentre
Tripod MountYes (Adapter Optional)
Dimensions6.7 x 5.2 x 2.3" / 17.02 x 13.21 x 5.84  cm
Weight29.6 oz / 839 g
Product:
Pentax 10x50 Z-Series ZD WP Binocular
Manufacturer:
Pentax
Model:
62723
SKU:
62723
RM Product #:
32156