Pentax 8-16x21 U-Series UP Binocular (Black)

Pentax 8-16x21 U-Series UP Binocular (Black)

Pentax 8-16x21 U-Series UP Binocular (Black)

B&H # PE816X21UPB MFR # 61961
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Product Highlights

  • Aspherical Lens Elements
  • BAK4 Porro Prisms
  • Fully Multicoated Optics
  • 8-16x Optical Zoom
  • Angle of View Range: 5-3°
  • Center Focusing
  • Sliding Eyecups
  • 1/4"-20 Tripod Socket
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  • 1Description

The compact and lightweight black 8-16x21 U-Series UP Binocular combines aspherical optical elements and BAK4 Porro prisms to deliver edge-to-edge image sharpness with a wide angle of view. The optical elements are also fully multicoated to provide a high transmission of light. With an 8-16x range of magnification and 21mm objectives, you obtain a wide zooming range and a compact form factor. You can easily spot your targets with a 5° angular field of view at 8x magnification and quickly zoom in on them with the optical zoom. To reduce image jitter at high zoom factors or for prolonged observations, you can connect the binocular to a tripod via an integrated 1/4"-20 socket. In addition to observing distant scenes, birds and game, the minimum focus of 9.9' allows you to study in detail close objects like animal footprints, marks or landscape features. The binocular also features a 2.6-1.3mm exit pupil range, a 14-11mm eye relief range, 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 sliding rubber eyecups. Also included are a carrying case, a neck strap, and eyepiece covers.

Optical Performance
  • Optical zoom range: 8-16x
  • BAK4 Porro prisms
  • Aspherical optical elements offer edge-to-edge image sharpness
  • Fully multicoated optics
  • Angular field of view range: 5-3°
  • 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
  • Sliding rubber eyecups
  • 1/4"-20 tripod socket
UPC: 027075288881
Prism Type Porro
Magnification 8-16x
Objective Lens Diameter 21 mm
Angle of View 8x: 5° (actual)
16x: 3° (actual)
Field of View 16x: 157.5' @ 1000 yd / 52.5 m @ 1000 m
Minimum Focus Distance 63.8' / 19.4 m
Exit Pupil Diameter 8x: 2.6 mm
16x: 1.3 mm
Eye Relief 8x: 14 mm
16x: 11 mm
Interpupillary Adjustment Not Specified by Manufacturer
Dioptric Correction Not Specified by Manufacturer
Focus Type Center
Tripod Mount Yes
Dimensions 4.4 x 4.4 x 2.1" / 11.1 x 11.1 x 5.3 cm
Weight 10.9 oz / 309 g
Packaging Info
Package Weight 1.15 lb
Box Dimensions (LxWxH) 5.7 x 5.7 x 3.2"
8-16x21 U-Series UP Binocular (Black) is rated 4.6 out of 5 by 8.
Rated 5 out of 5 by from Impressive and Well Designed I had some B&H Reward points to burn and put them toward this purchase. I have really nice (and heavy) larger binoculars with much wider objective lenses that I use for hunting and keep in the car, but I found myself only taking a 6x rangefinder in my backpack when hiking (carrying 42 oz worth of binocular is too much... that much weight is better spent on photo gear or water!) so I knew I needed a lighter set of binoculars. I didn't expect much out of these, but I liked the design and the 8-16 zoom feature was intriguing. I am very happy with this purchase and these binoculars will be with me on every hike from now on. The weight is about what I expected, but just to give you some specific details: 11.0 oz Binoculars alone (no strap, case, or caps) 11.66 oz Binoculars w/ strap and lens cap 13.40 oz Binoculars w/ strap, cap, case The case is very nice (much, much nicer than I expected) and the strap has a very nice easy-clip design that makes perfect sense and seems very secure, especially for this size binocular. OK, so in bright light the 16x21 is actually usable and a little tough to focus, but definitely nice to have. The important thing is that these work extremely well at 8x21, which is what I was hoping. So the extra range is great to have, and there is only a small weight penalty for that. Of course it's a little shaky above 10x or so, but anybody with half a brain would expect that. For any outdoor activities (concerts, sports, hiking, etc.) these would work very well. Probably not the best for hunting since you'd need something a little brighter (which of course means more weight) for dusk/dawn spotting. The focus and zoom knobs are very smooth. The diopter knob is centered, which I find to be very intuitive and smartly designed. The diopter knob is a push button design that, once set, can be pushed in so it's not confused with the zoom and focus knobs. Smart. From the photo I thought the knobs might be confusing and wondered if the Nikon design of sliding lever for zoom and knob for focus might be better, however after using the Pentax I think its knobs probably make more sense and are ergonomically very well designed. The only real negative is the eye relief; it's very shallow and I cannot use these with my glasses. Having said that, I often prefer to extend the eye cups and flip my glasses up anyway, especially in bright light (which is typical when we're hiking) so this isn't an issue for me. However, if you are passing these binoculars back and for with others it would be a pain because they would have to adjust the diopter. In summary, I think this Pentax binocular is an extremely good value and I'm very pleased with this purchase. It's nice to be pleasantly surprised to find such a well thought out design at this price point, with such solid build quality. I won't name any other brands or models, but I've returned binoculars at this price point before, but I'll be keeping these and would consider them as gifts for others.
Date published: 2015-11-05
Rated 5 out of 5 by from Excellent product; excellent purchasing experience. The binocular is everything we had hoped it would be - compact, well constructed and easy to use. In addition, our salesman was pleasant and knowledgeable and the unit was shipped immediately and received just a few days after the order.
Date published: 2016-07-13
Rated 5 out of 5 by from This was the perfect choice Travels well. Small but very useful. Having a zoom capability turned out to be great when we found out that we were further from the stage than expected at a huge concert. The wide view also makes it easier to watch for a while since your hand shaking is less noticeable.
Date published: 2016-11-08
Rated 5 out of 5 by from I would buy this product again!! Taking these on vacation for whale watching!! This is the nicest set I have now. Lightweight and small enough for easy carrying.
Date published: 2016-12-01
Rated 2 out of 5 by from Not Sharp enough Having problems seeing enough detail in the image. Not a good enough pair of binoculars.
Date published: 2017-06-19
Rated 5 out of 5 by from Packs a big punch in a small package. Excellent value for the money. Knowledgeable salesman at B+H on my phone order.
Date published: 2016-09-15
Rated 5 out of 5 by from Really nice binoculars Light weight and easy to use. Very good purchase!
Date published: 2016-03-01
Rated 5 out of 5 by from Binocs Great binoculars! Very good price!
Date published: 2016-12-15
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