Pentax 8×43 ZD ED Binoculars
- Extra Low-Dispersion Glass
- Phase-Corrected BAK4 Roof Prisms
- Hybrid Aspherical Lens Elements
- Fully Multicoated Optics
- Angle Viewing: 50°
- Nitrogen-Filled, Water and Fogproof
- Closed Bridge Configuration
- Magnesium Alloy Chassis
- Tripod Mountable
- Twist-Up Eyecups
With an eye for the discerning nature enthusiast, the Pentax 8×43 ZD ED Binoculars feature multiple optical technologies to improve the image quality and ensure accurate colors 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 colors 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 colors 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 rubberized armor 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
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- 8x magnification
- 43mm objective lenses
- BAK4 Roof prism optical path
- Anti-reflection fully multicoated optics
- Extra-low dispersion (ED) glass reduces chromatic aberration for sharper images with accurate color
- Phase corrected prisms produce high-contrast images with true color 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
- 330.8′ field of view at 1000 yards
- 50° angle of view
- Use and Handling
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- Closed bridge configuration
- Large knurled center focus wheel
- Right-eye diopter adjustment
- 22mm eye relief, 5.4mm exit pupil
- Twist-up eyecups for use with or without eye wear
- Tripod mountable with optional adapter
- Construction Details
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- Lightweight and durable magnesium alloy housing
- Rubberized armoring 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
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