Nikon 8x42 Prostaff 5 Binoculars (Black) ROOF Prism-water/fog proof-BAK4
 
PRODUCT HIGHLIGHTS
 
Lead- and Arsenic-Free Eco-Glass
Multi-Coated Optics
Nitrogen-Filled, Water and Fogproof
Closed-Bridge Configuration
Reinforced Polycarbonate Chassis
Large Center Focusing Knob
Twist-Up Click-Stop Eyecups
Textured Rubber Armoring
Weight: 23 Ounces
Nikon's black 8x42 ProStaff 5 Binoculars are engineered to produce bright and clear high-contrast images with true color rendition across the entire field of view. Their 8x magnification brings subjects up close, but without the noticeable hand shake often associated with higher power optics, while the 42mm objectives boost the light-gathering ability to improve views in challenging light such as at dawn and dusk, or in foggy and cloudy weather. With the combination of optical coatings, a respectable angle of view, and comfortable eye relief, users can enjoy bright and clear views in most lighting conditions.Complementing the optical performance are construction details that make these binoculars durable and comfortable to use. They have a lightweight and durable reinforced polycarbonate resin chassis, and are protected by black rubberized armor. The optical tubes are nitrogen-filled and O-ring sealed to be waterproof and submersible, as well as resistant to internal fogging when moving through extreme temperature variations and environmental conditions. A tethered one-piece ocular rainguard covers the eyecups as they hang around the neck and prevents rain and spraying water from filling them, and the objective lens caps can clip onto the neck strap to keep them safe from blowing overboard or being lost on the forest floor.Whether you're hunting or birding, boating or watching your favorite team, this ProStaff will quickly become your go-to pair of binoculars for all observing needs.Optical Performance 
 
8x power magnifies objects without sacrificing field of view or exit pupil
42mm objective lenses improve light-gathering ability without adding excessive bulk or weight
Roof prism light path ensures optical tubes remain thin for a compact form factor
Anti-reflection multi-coated optics maximize light transmission across the entire visible spectrum for accurate color rendition and improved contrast and clarity
330' field of view at 1000 yards
Use and Handling 
 
Closed-bridge configuration provides a solid and stable platform for the internal focusing mechanism
Large slip center focus wheel allows for precise focus control, even while wearing gloves
Right eye dioptric adjustment collar helps to compensate for individual eye prescription
Twist-up/click-stop rubber eyecups for use with or without eyewear
Long 17.6mm eye relief helps to reduce eye strain and improves viewing comfort
Wide 5.25mm exit pupil will completely cover most pupils as they open and dilate in low light to keep the full scene in view
Construction Details 
 
Environmentally friendly Eco-Glass is made without lead or arsenic
Lightweight and durable fiberglass-reinforced polycarbonate chassis
Chassis material is temperature resistant, preventing the expansion and contraction that is common with metal, which can cause the optical components to move out of alignment over time and prevent sharp focus
Textured protective rubber armoring provides a slip-resistant grip, especially in cold and wet weather
Indents on the sides of the optical tubes are ergonomically placed where the hands naturally fall for a more comfortable feel in the hand and a more secure grip
Nitrogen-filled and O-ring sealed to be waterproof and resistant to internal fogging when moving through extreme temperature changes and environmental conditions
One-piece tethered ocular rainguard protects eyecups from water pooling in them from rain or spraying water when hanging from the neck
Objective lens caps can be clipped to neck strap to avoid losing them during observation sessions
Weight: 23 ounces
Prism TypeRoofMagnification8xObjective Lens Diameter42mmAngle of View6.3° (actual)Field of View330.0' @ 1000 yd / 109.56 m @ 1000 mMinimum Focus Distance16.4' / 5 mExit Pupil Diameter5.25 mmEye Relief17.6 mmInterpupillary Adjustment56.0 - 72.0 mm / 2.2 - 2.8"Dioptric CorrectionNot Specified by ManufacturerFocus TypeCenterTripod MountNoneDimensions6.5 x 5.1" / 16.5 x 13.0 cmWeight22.8 oz / 646 g