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Pentax 8.5x21 Papilio III WR Binoculars (Olive)

BH #PE85X21P3OLV • MFR #62017
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Pentax 8.5x21 Papilio III WR Binoculars (Olive)
Key Features
  • Aspherical Lens Elements
  • BAK4 Porro Prisms
  • Fully Multicoated Optics
  • Rubber Armored and Weather Resistant
Featuring premium optical elements and a weather-resistant chassis, the lightweight, compact 8.5x21 Papilio III WR Binoculars from Pentax are ideal for art museums, concert venues, meadows, and mountains. Fully multicoated glass surfaces, with certain lenses receiving an additional antireflective layer, and BAK4 Porro prisms ensure optimal light transmission for a crisp, high-contrast view. You can easily spot your targets with the generous 6° angular field of view, and the 20" close-focus distance lets you see the details of that nearby bird or masterpiece. To accommodate eyeglasses wearers, the binoculars offer twist-up rubber eyecups.
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Pentax Papilio III 8.5x21 Overview

Featuring premium optical elements and a weather-resistant chassis, the lightweight, compact 8.5x21 Papilio III WR Binoculars from Pentax are ideal for art museums, concert venues, meadows, and mountains. Fully multicoated glass surfaces, with certain lenses receiving an additional antireflective layer, and BAK4 Porro prisms ensure optimal light transmission for a crisp, high-contrast view. You can easily spot your targets with the generous 6° angular field of view, and the 20" close-focus distance lets you see the details of that nearby bird or masterpiece. To accommodate eyeglasses wearers, the binoculars offer twist-up rubber eyecups.

Optical Performance
  • BAK4 Porro prisms
  • Aspherical optical elements offer edge-to-edge image sharpness
  • Fully multicoated optics with additional HD coating on select surfaces
  • Angular field of view: 6°
  • Minimum focus of 20"
  • High-refraction BAK4 Porro prisms aid in light transmission and provide a better sense of depth perception than roof prisms
  • Smooth and accurate interpupillary adjustment
  • Click-stop diopter adjustment preserves your setting
Construction Details
  • Weather-resistant construction means rain or splashing won't spoil your plans
  • Rubber-armored body provides a comfortable grip and guards against damage
  • Center focus knob offers easy focusing
  • Twist-up rubber eyecups
  • Compatible with separately sold tripod adapter
  • Quick attach and detach neck strap
UPC: 027075311855

Pentax Papilio III 8.5x21 Specs

Key Specs
Prism Type
Porro (BAK4)
Magnification
8.5x
Objective Lens Diameter
21 mm
Angle of View
6° (Actual)
Field of View
315' @ 1000 yd / 104.6 m @ 1000 m
Exit Pupil Diameter
2.5 mm
Prism Type
Porro (BAK4)
Performance
Magnification
8.5x
Objective Lens Diameter
21 mm
Angle of View
6° (Actual)
Field of View
315' @ 1000 yd / 104.6 m @ 1000 m
Minimum Focus Distance
20" / 50.8 cm
Exit Pupil Diameter
2.5 mm
Eye Relief
15 mm
Focus Type
Center
Features
Stabilization Freedom
No
Environmental Resistance
Water-Resistant (Unrated)
General
Dimensions
4.5 x 4.4 x 2.2" / 114.3 x 111.8 x 55.9 mm
Weight
10.4 oz / 295 g
Packaging Info
Package Weight
1.02 lb
Box Dimensions (LxWxH)
5.5 x 5.4 x 2.9"

Pentax Papilio III 8.5x21 Reviews

Brilliant!

By Eric
Rated 5 out of 5
Date: 2026-04-17

A brilliant solution for close-up binocular viewing! I use them for bugs, for birds, and for everything in between.

Papilio III WR Binoculars

By Nancy
Rated 5 out of 5
Date: 2025-12-27

Bought as a Christmas present for our son. He loves them.

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