PENTAX Papilio III WR 8.5×21

Model 62016

The PENTAX Papilio III WR 8.5×21 is a compact binocular designed for observing both nearby details and distant subjects. Its 50 cm minimum focusing distance makes it useful for examining flowers, insects, museum displays, and other small objects without switching to a separate close-up optic. The 8.5× magnification, 21 mm objectives, BaK-4 Porro prisms, fully multi-coated optics, and HD coating support detailed viewing in a portable 295 g design. Weather-resistant construction adds versatility for everyday outdoor use.

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Key Features

The PENTAX Papilio III WR 8.5×21 combines close-range viewing, compact portability, and weather-resistant construction for detailed observation indoors and outdoors.

8.5x

Magnification

21 mm

Objective Lens

50 cm

Close Focus

WR

Weather Resistance

BaK-4

Porro Prisms

295 g

Compact Design

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Quick Specifications

Specification Details
Magnification 8.5×
Objective Lens Diameter 21 mm
Minimum Focus Distance 0.5 m (1.6 ft)
Field of View 6.0°
Prism Type Porro, BaK-4 glass
Weather Resistance Water-resistant construction
Weight Approx. 295 g (10.4 oz)

About This Model

The PENTAX Papilio III WR 8.5×21 is a compact binocular designed for people who want to examine nearby details as well as observe subjects at greater distances. Its distinctive close-focusing system allows focusing from approximately 50 cm, making it particularly useful for viewing flowers, butterflies, insects, museum exhibits, and other small subjects. The 8.5× magnification provides detailed views while maintaining a portable form factor.

The binocular uses 21 mm objective lenses and BaK-4 Porro prisms, combining a compact body with an optical layout suited to close-range observation. Fully multi-coated optics help improve light transmission, while the model’s HD coating is designed to support image quality. Its 6.0° angular field of view provides a useful viewing area for locating and observing subjects without excessive magnification.

The Papilio III WR is designed for outdoor use with a water-resistant construction that adds protection in changeable conditions. Weighing approximately 295 g, it is easy to carry on nature walks, sightseeing trips, and other outings where compact equipment is preferred. Its main distinguishing feature remains the ability to focus at very short distances, making it a specialized option for close-up observation rather than simply a conventional compact binocular.

Full Specifications

The PENTAX Papilio III WR 8.5×21 combines close-focus capability with a compact optical design for observing nearby details and distant subjects. The specifications below cover its magnification, optical system, focusing performance, field of view, physical dimensions, and weather-resistant construction to help you assess its suitability for nature observation, travel, and everyday use.

Specification Details
BrandPENTAX
ModelPapilio III WR 8.5×21
ManufacturerRICOH IMAGING
Binocular TypeCompact Close-Focus Binoculars
Magnification8.5×
Objective Lens Diameter21 mm
Prism SystemPorro Prism
Prism GlassBaK-4
Lens ConstructionAspherical Optical Elements
Lens CoatingFully Multi-Coated
Additional Optical CoatingHD Coating
Real Field of View6.0°
Field of View at 1,000 m105 m
Field of View at 1,000 yd315 ft
Exit Pupil Diameter2.5 mm
Eye Relief15 mm
Relative Brightness6.3
Minimum Focusing DistanceApprox. 0.5 m (1.6 ft)
Focusing SystemCenter Focus
Close-Range Viewing MechanismConvergence Correction Mechanism
Diopter AdjustmentClick-Stop Adjustment
EyecupsPull-Up Eyecups
Weather ResistanceWater-Resistant Construction
Waterproof RatingNo Immersion Rating Specified
Body ConstructionRubber-Armored Body
Tripod CompatibilityCompatible with Optional Tripod Adapter U
Height116 mm (4.6 in)
Width110 mm (4.3 in)
Thickness55 mm (2.2 in)
WeightApprox. 295 g (10.4 oz)
Included AccessoriesCase, Neck Strap, Eyepiece Lens Cap
Intended UsesClose-Up Nature Observation, Insects, Flowers, Museums, Sightseeing, and General Outdoor Viewing

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Where to Buy

Check the latest price and availability for the PENTAX Papilio III 8.5×21 WR on Amazon.

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