Pentax 8x25 U-Series UP Compact Binocular

Pentax 8x25 U-Series UP Compact Binocular

Pentax 8x25 U-Series UP Compact Binocular

B&H # PE8X25UP MFR # 61901
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Product Highlights

  • BAK4 Porro Prisms
  • Fully Multicoated Optics
  • Angle of View: 50°
  • Reinforced Polycarbonate Housing
  • Synchronized Eyepiece Adjustment
  • Center Focusing
  • Standard 1/4"-20 Tripod Mount
  • Twist-Up Eyecups
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  • 1Description

Pentax's highly portable and functional 8x25 U-Series UP Compact Binocular employs an innovative unibody design that locks the objective lenses into the body with the eyepieces set on a synchronized dual-axis mechanism that ensures they stay symmetrical in relation to the center axis of the optic when adjusting the interpupillary distance. The 25mm objective lenses are fully multicoated to reduce reflection and maximize light transmission to produce the brightest images possible. Aspherical lens elements virtually eliminate distortion, especially around the edges, and corrects for lens astigmatism which can prevent sharp focusing.

Designed for easy carrying and stowing, the binocular features a lightweight fiberglass reinforced polycarbonate housing that is corrosion and impact resistant. The housing material is also temperature-resistant allowing for its use in extreme climates while reducing expansion and contraction wide temperature variations can cause, which can make the optical components move out of collimation over time.

Optical Performance
  • 8x magnification
  • 25mm objective lenses
  • BAK4 porro-prism optical design
  • Aspherical lens elements reduce distortion at the edges and corrects for lens astigmatism which can prevent sharp focusing
  • Anti-reflection fully multicoated optics
  • 325.5' field of view at 1000 yards
  • 50° angle of view
Use and Handling
  • Dual-axis synchronized eyepiece adjustment ensures symmetrical placement when changing interpupillary distances
  • Knurled center focus wheel
  • Twist-up eyecups for use with or without eye wear
  • 15mm eye relief, 3.1mm exit pupil
  • Standard 1/4"-20 tripod mount
Construction Details
  • Lightweight fiberglass reinforced polycarbonate housing
  • Housing is corrosion, temperature and impact-resistant
  • Rubberized armoring protects against impacts and provides slip-resistant grip
  • Inner focusing mechanism provides smooth focus while preserving waterproof seals
UPC: 027075288843
Prism Type Porro
Magnification 8x
Objective Lens Diameter 25 mm
Angle of View 6.2° (actual)
Field of View 325.5' @ 1000 yd / 108.5 m @ 1000 m
Minimum Focus Distance 40.6' / 12.4 m
Exit Pupil Diameter 3.1 mm
Eye Relief 15 mm
Interpupillary Adjustment Not Specified by Manufacturer
Dioptric Correction Not Specified by Manufacturer
Focus Type Center
Tripod Mount Yes
Dimensions 4.5 x 4.3 x 2.2" / 11.4 x 10.9 x 5.6 cm
Weight 10.6 oz / 300.5 g
Packaging Info
Package Weight 1.0 lb
Box Dimensions (LxWxH) 5.6 x 5.2 x 2.9"
8x25 U-Series UP Compact Binocular is rated 4.5 out of 5 by 2.
Rated 5 out of 5 by from Excellent Recently acquired a house in country side and wanted to have a binocular for bird watch and etc. The salesperson at the B&H recommended against my first choice. It is excellent and it was less expensive than the other. I wear glasses and the eye piece is adjustable for glasses. I recommend.
Date published: 2015-07-29
Rated 4 out of 5 by from Best images Lenses are very clear.
Date published: 2017-12-21
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