Pentax 8.5x21 U-Series Papilio II Binocular

Pentax 8.5x21 U-Series Papilio II Binocular

Pentax 8.5x21 U-Series Papilio II Binocular

B&H # PE85X21P2 MFR # 62002
Pentax 8.5x21 U-Series Papilio II Binocular


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Product Highlights

  • Aspherical Lens Elements
  • BAK4 Porro Prisms
  • Fully Multicoated Optics
  • Angle of View: 6°
  • Minimum Focus of 20"
  • Center Focusing
  • Twist-Up Eyecups
  • 1/4"-20 Tripod Socket
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  • 1Description

The compact and lightweight 8.5x21 U-Series Papilio II Binocular combines aspherical optical elements and BAK4 Porro prisms to deliver edge-to-edge image sharpness with a 51° apparent angle of view. The optical elements are also fully multicoated to provide a high transmission of light. With a 8.5x magnification and 21mm objectives, you obtain a notable magnification, insignificant image jitter due to unsteady hands, and a compact form factor. You can easily spot your targets with a wide 6° angular field of view and quickly bring them into focus with a center focus wheel. In addition to observing distant scenes, birds and game, the minimum focus of 20" allows you to study in detail close objects like butterflies, animal footprints, marks or landscape features. To reduce image jitter while observing distant objects or for prolonged observations, you can connect the binocular to a tripod via an integrated 1/4"-20 socket. The binocular also features a 2.5mm exit pupil, a 15mm eye relief, an interpupillary and a diopter adjustments.

The binocular is very compact, lightweight, and features a single piece frame that houses objectives, which allows for a synchronized interpupillary adjustment. To accommodate eye glasses wearers, the binocular offers twist-up rubber eyecups. Also included are a carrying case, a neck strap, and eyepiece covers.

Optical Performance
  • BAK4 Porro prisms
  • Aspherical optical elements offer edge-to-edge image sharpness
  • Fully multicoated optics
  • Angular field of view: 6°
  • Minimum focus of 20"
  • Interpupillary adjustment
  • Diopter adjustment
Construction Details
  • Single piece objectives' frame allows for a synchronized interpupillary adjustment
  • Contoured body provides a comfortable grip
  • Center focus knob offers an easy focusing
  • Twist-up rubber eyecups
  • Integrated 1/4"-20 tripod socket
UPC: 027075288928
Prism Type Porro
Magnification 8.5x
Objective Lens Diameter 21 mm
Angle of View (actual)
Field of View 315.0' @ 1000 yd / 105.0 m @ 1000 m
Minimum Focus Distance 10.4' / 3.2 m
Exit Pupil Diameter 2.5 mm
Eye Relief 15 mm
Interpupillary Adjustment Not Specified by Manufacturer
Dioptric Correction Not Specified by Manufacturer
Focus Type Center
Tripod Mount Yes
Dimensions 4.6 x 4.3 x 2.1" / 11.6 x 11.0 x 5.3 cm
Weight 10.2 oz / 289.2 g
Packaging Infoawdxquva
Package Weight 1.05 lb
Box Dimensions (LxWxH) 5.8 x 5.4 x 2.8"
8.5x21 U-Series Papilio II Binocular is rated 4.7 out of 5 by 17.
Rated 5 out of 5 by from Versatile little mutli-Bino Pro's Physical: Small, compact, lite, and comfortable to hold. No more losing the Lens covers, they are connected together and can be attached to strap. Technical: Versatile enough to jump from butterfly to bird watching. Powerful and clear image at 18 inches or 100 feet. Unlike other small binoculars, they have a strap that connects on both side of the device so you can hang it around your neck. Last pair only had wrist strap. Cost: B&H cannot be beat! Price was best on web when purchased. Following week BH dropped price, when I asked for it they credited my card the difference.
Date published: 2015-05-06
Rated 5 out of 5 by from Great Binoculars! This is a really nice binocular. Very crisp and bright image for the size, easy to hold and adjust and not to heavy or large for smaller hands (my wife). Of particular interest is that the shortest distance that can be viewed is only 1.5 feet, so you can view things, like flowers and bugs, very closely which is almost like looking through a microscope. They work very well for more distant objects like birds or deer. Very high quality and solid construction. Very pleased!
Date published: 2016-12-08
Rated 5 out of 5 by from Big Surprise! John Muir Laws recommended this binocular for field journaling & general use. I hesitated for some time before getting it as I thought that the close-focus feature would just be a gimmick. Close focus is no gimmick, and makes the bino a perfect field companion for almost everything. I have a couple of Nikons which I dearly love, and which do have superior optics to the Papilio, but for multiple uses I always take the Papilio with me.
Date published: 2016-11-24
Rated 4 out of 5 by from Good all-purpose nature viewing binoculars I purchased this on the recommendation of a naturalist who leads a local nature journal club. It makes possible viewing of small flowers and wildlife from a comfortable distance (i.e., not having to get down on your hands and knees with a magnifying glass; that also means that an entire group can view the same small object simultaneously). It can be held and adjusted comfortably in one (female) hand and is lightweight, which is important if you're viewing and sketching at the same time. This would not be binoculars you'd use when you need to see detail from a great distance, but it's OK for viewing birds that aren't too far away. I have not run into distortions or glare in bright light mentioned by purchasers of the prior model, whose lenses may not have been fully multi-coated. I also took the binoculars (in lieu of a magnifying glass recommended by a docent) to a museum to view details of a light-sensitive collection displayed in dim light. I was surprised at how well I could see despite the dim light b/c some reviewers said that the prior model didn't have the light transmission of higher-end models. My only beefs with the Papillio II are (I wear small glasses that sit close to my face and have mild vision problems, especially in my right eye): --the eye relief (15 mm) is just barely OK - this is what loses the Papillio II a star to half a star. --I find the diopter adjustment, which adjusts in steps rather than continuously, a little awkward In general, I'm satisfied with these binoculars as a reasonably well-rounded and reasonably-priced nature viewing instrument and would give it 4.5 stars if we were allowed half stars. I'll be keeping watch for sales and will likely purchase a second one for my spouse.
Date published: 2015-04-24
Rated 5 out of 5 by from All in one Binoculars Outstanding clarity. I already own the 6.5 x 21 Papillo. I would recommend either one. You get a little less shake with the 6.5. But you get a little more distance with the 8.5. If you frequently use a tripod and these have a tripod adapter then get the 8.5. The close up feature of these binoculars takes using binoculars to a different world.
Date published: 2016-09-03
Rated 5 out of 5 by from Best purchase ever Fantastic for looking at insects and birds, and can quickly switch between the two. Compact and light enough to carry in my bag and always have on hand. Clear image. Smooth and easy focusing.
Date published: 2015-07-20
Rated 5 out of 5 by from Great Binocular Love these. Compact, light, great optics, smooth focusing, and ability to focus really close. Have several other similar binoculars that do not have the ability to focus close. The ability to focus close greatly increases the usefulness for me. Since getting them it has opened up a whole new world. These are very versatile and I would suggest you consider these over others that cannot focus close.
Date published: 2016-02-04
Rated 5 out of 5 by from Ideal for observing butterflies and other insects This is my third pair of Papilios. I am an avid field observer of butterflies and other insects, often as a professional consultant, and for seeing the details of these often tiny animals, no other brand/model even approaches this binocular's close-focusing capabilities. They hold up reasonably well considering the hard use I put them to, and especially considering the very reasonable price.
Date published: 2015-05-28
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