Pentax 7x50 Marine Binocular (Compass, Ranging Reticle)

Pentax 7x50 Marine Binocular (Compass, Ranging Reticle)

Pentax 7x50 Marine Binocular (Compass, Ranging Reticle)

B&H # PE7X50MB MFR # 88039
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Value: $9.99

Product Highlights

  • Phase-Corrected BAK4 Roof Prisms
  • Fully Multi-Coated Optics
  • Illuminated In-View Compass
  • Right-Eye Ranging Reticle
  • Protective External Lens Coatings
  • Nitrogen-Filled, Water and Fogproof
  • Short, Closed Bridge Configuration
  • Large Center Focusing Knob
  • Twist-Up Eyecups
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  • 1Description

Designed and purpose-built for use on the water in all weather conditions, the Pentax 7x50 Marine Binocular is outfitted with a magnification and objective lens combination that ensures a wide exit pupil and enhanced light-gathering ability, plus an illuminated compass and ranging reticle. These features work together to help mariners make it back to port time and again.

Optically, the binocular makes use of phase-corrected BAK4 roof prisms that are coated with highly-reflective silver coatings to maximize internal light transmission and limit diffraction. The objectives are fully multi-coated to further improve light transmission. These features complement each other and produce bright and clear high-contrast images with accurate color fidelity. By combining a relatively low magnification with large objective lenses, the binocular draws in copious amounts of light required for use in challenging light such as at dawn and dusk, or in heavy fog and thick cloud cover. The combination also produces a wide exit pupil to ensure complete coverage as they open and dilate in low light to ensure a full field of view and maximize light entering the eyes.

The compass uses both passive and active illumination so that during the day the ambient light passes through a diffuser filter to show the bearing indicators, and in low light or at night an LED emitter can be activated to provide illumination — ensuring easy readings in all conditions. An in-view ranging reticle is also included to enable users to estimate the distance to objects, or to estimate their size. These tools allow mariners to more accurately navigate waters. Rounding out the features in a nitrogen-filled and O-ring sealed housing for waterproof and fogproof performance, and a slip-resistant rubber armoring for sure handling in cold and wet conditions.

Optical Performance
  • Moderate 7x power magnifies objects while ensuring a wide exit pupil
  • Large 50mm objective lenses draw in copious amounts of light to boost low-light performance and lengthen eye relief
  • Compact roof prism design helps to minimize form-factor despite the large objective lenses
  • BAK4 prism glass delivers a round exit pupil, and a crisp and clear image with limited edge distortion
  • Phase-corrected and highly-reflective silver coated prisms limit internal diffraction to improve resolution and contrast
  • Fully multi-coated optics maximize light transmission to ensure bright and clear images with accurate color fidelity
  • External lens coating prevents salt, oil, dirt, and other materials from adhering to the surface and obscuring the view
  • 7-element/5-group lens construction
  • 350-foot field of view at 1000 yards
  • Easy-to-read compass scale allows reading to be taken in rough or rolling seas
  • Internal system enables quick dampening when movement is stopped after panning for faster and more accurate reads
  • Compass directional bearings are defined in precise 1° increments
  • Ranging reticle allows users to estimate distance to an object or the size of it; 5-mil wide stadia with hash marks every 10 mils
  • Passive daytime illuminator uses an exterior diffuser filter to highlight compass using ambient light
  • Active LED compass illuminator for low light or night use
  • Simple one-button activation, LED illuminator only stays on while button is depressed to conserve battery power
  • Runs on two included LR43 batteries
Use and Handling
  • Short closed-bridge provides a stable platform for compass, reticle, and focusing mechanism
  • Large slip-resistant center focusing wheel is easy to manipulate even while wearing gloves
  • Fast internal focusing system runs through entire range in under two rotations
  • ±3 right-eye dioptric correction, with precise click-stop adjustment locks
  • 56-73mm interpupillary adjustment range
  • Long 17.6mm eye relief helps to reduce eye strain and improves viewing comfort
  • Wide 7.1mm exit pupil will completely cover pupils as they open and dilate in low light to provide a full-frame field of view without vignetting
Construction Details
  • Rubber covered exterior provides a sure grip and protects the internal mechanisms from damage
  • Nitrogen-filled and O-ring sealed to be waterproof to a depth of 4.9' (1.5m), and resistant to internal fogging when moving through extreme changes in temperature or environmental conditions
  • Weight: 34 ounces
UPC: 027075137264
In the Box
Pentax 7x50 Marine Binocular (Compass, Ranging Reticle)
  • Nylon Case
  • Neck Strap
  • 2 x Objective Caps
  • 2 x LR43 Batteries
  • Limited Lifetime Warranty
  • Table of Contents
    • 1Description
    Prism Type Roof
    Magnification 7x
    Objective Lens Diameter 50mm
    Angle of View 6.7° (actual)
    Field of View 350.0' @ 1000 yd / 116.20 m @ 1000 m
    Minimum Focus Distance 9.8' / 3 m
    Exit Pupil Diameter 7.1 mm
    Eye Relief 17.6 mm
    Interpupillary Adjustment 56.0 - 73.0 mm / 2.2 - 2.9"
    Dioptric Correction ±3
    Focus Type Center
    Tripod Mount Not Specified by Manufacturer
    Dimensions 6.9 x 5.4 x 2.3" / 17.5 x 13.7 x 5.8 cm
    Weight 34.4 oz / 976.0 g
    Packaging Inforwdqevfqvycqxwcv
    Package Weight 3.05 lb
    Box Dimensions (LxWxH) 8.2 x 7.1 x 3.6"
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