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Questions & Answers

FAQ

What makes the 8-16x21 UP Series Zoom Weather Resistant Porro Prism Binocular suitable for both indoor and outdoor use?

The binocular is compact and durable, with fully-multi-coated optics that ensure maximum light transmission, providing high-quality viewing in both indoor and outdoor settings.

What is the benefit of the dual-axis, single-body design?

The dual-axis, single-body design with synchronized eyepiece adjustment offers a seamless viewing experience, making it easier to focus and adjust the binoculars.

What does the unique Uni-body design contribute to the binocular?

The unique Uni-body design locks the objective lenses in a single housing and synchronizes the eyepiece movement. This minimizes moving parts, enhancing the durability of the binocular and ensuring it functions properly for years to come.

What is the role of the aspherical lens elements in these binoculars?

The aspherical lens elements in the binoculars provide exceptional edge-to-edge sharpness. This means that items on the edge of your field of view are just as sharp as those in the center.

Are there different color options available for the 8-16x21 UP Series Zoom Weather Resistant Porro Prism Binocular?

Yes, the UP 8-16x21 Zoom and UP 10x21 and 8x21 models are available in unique, attractive color options to match your personal style.

Shopper : Why Did You Choose This?Dennis S : Pentax reputation for high quality optics.MICHAEL R : Best value in high quality compact zoom binoculars.DEAN S : Zoom range, small size the last Pentax Binocular was was sharper tah a similar Nikon BinocularVAN H : A friend has a pair and they were great to bird watch.

Reviews about this item

Review Summary

2020-08-27T09:33:25

Rated 4 out of 5

Great value in a 8x-16x zoom binocular

Great value, bright and sharp images. I especially like the long zoom range (8x-16X) in a compact package. I would recommend this product to anyone wanting a flexible binocular in this price range.

NARK N.

2018-05-29T08:45:39

Rated 5 out of 5

Great Next Step

These are the next step up from the 8x close focus(18") set I purchased previously. I wanted a little more magnification and these extend it to from 8x to 16x. Very good for Florida bird watching from the lanai. They are a great set of binoculars at a fair price.

Gary M.

2017-05-04T09:27:51

Rated 4 out of 5

Very nice Binocular from Pentax

Very nice Binocular from Pentax. Small and lightweight, with weatherproofing, good for everyday use.

James M.

2017-03-14T09:55:29

Rated 5 out of 5

I'm glad that I chose this item and it has exceeded my expectations. Nice pair of binoculars.

The zoom option is great. Also, I like the light feel when in use.

David C.

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Pentax UP 8-16x21 Specifications

  • Prism Type

    Porro

  • Magnification

    8-10x

  • Objective Lens Diameter

    21mm

  • Angle of View

    8x: 5 deg. (actual)
    16x: 3 deg. (actual)

  • Field-of-View

    8x: 261' at 1000 yd / 86.65m at 1000m
    16x: 156' at 1000 yd / 51.79m at 1000m

  • Minimum Focus Distance

    9.9' / 3.02m

  • Exit Pupil Diameter

    8x: 2.6mm
    16x: 1.3mm

  • Eye Relief

    8x: 14mm
    16x: 11mm

  • Focus Type

    Center

  • Tripod Mount

    Yes

  • Dimensions

    4.37 x 4.37 x 2.1" / 11.10 x 11.10 x 5.33cm

  • Weight

    10.9oz / 309.01g

  • UPC Code

    027075288904

4 Accessories for Pentax 8-16x21 UP Series Zoom Weather Resistant Porro Prism Binocular with 5.0-3.0 Degree Angle of View, Green

  • All Accessories (4)
  • Cleaning Accessories (1)
  • Brackets & Mounts (1)
  • Tripods (1)
  • Adapters & Mounts (1)

About Pentax UP 8-16x21

FEATURED REVIEWS

Great Next Step

By Gary M.

These are the next step up from the 8x close focus(18") set I purchased previously. I wanted a little more magnification and these extend it to from 8x to 16x. Very good for Florida bird watching from the lanai. They are a great set of binoculars at a fair price.

I'm glad that I chose this item and it has exceeded my expectations. Nice pair of binoculars.

By David C.

The zoom option is great. Also, I like the light feel when in use.

Be ready to capture every detail of your surroundings with the 8-16x21 UP Series Zoom Weather Resistant Porro Prism Binocular. Designed for both indoor and outdoor use, this compact, durable binocular from PENTAX offers superior quality and clarity, making it a perfect companion for field explorations, theater visits, and more.

The binocular features a dual-axis, single-body design with synchronized eyepiece adjustment, ensuring a seamless viewing experience. Its aspherical lens elements deliver edge-to-edge sharpness, providing you with a clear, detailed view of your subject, whether it's in the center or at the edge of your field of view.

The fully-multi-coated optics of this Porro Prism Binocular ensure maximum light transmission, resulting in high-quality viewing. Every surface of every element is fully coated, effectively minimizing internal glare and flare, and offering a bright, clear view.

The unique Uni-body design of the 8-16x21 UP Series Zoom Weather Resistant Binocular enhances its durability by locking the objective lenses in a single housing and synchronizing the eyepiece movement. This innovative design minimizes moving parts, ensuring that the binocular will function properly and clearly for years to come.

Available in unique, attractive color options, the UP 8-16x21 Zoom and UP 10x21 and 8x21 models are designed to match your personal style. Experience the world in high definition with the 8-16x21 UP Series Zoom Weather Resistant Porro Prism Binocular.

Pentax UP 8-16x21 Features

  • Compact, durable Porro Prism Binocular ideal for both indoor and outdoor use
  • Dual-axis, single-body design with synchronized eyepiece adjustment for seamless viewing
  • Fully-multi-coated optics for maximum light transmission and high-quality viewing
  • Unique Uni-body design locks objective lenses in a single housing, enhancing durability
  • Aspherical lens elements provide exceptional edge-to-edge sharpness
  • Available in unique, attractive color options to match your personal style

Key Features

  • Compact, durable Porro Prism Binocular ideal for both indoor and outdoor use
  • Dual-axis, single-body design with synchronized eyepiece adjustment for seamless viewing
  • Fully-multi-coated optics for maximum light transmission and high-quality viewing
  • Unique Uni-body design locks objective lenses in a single housing, enhancing durability
  • Aspherical lens elements provide exceptional edge-to-edge sharpness
  • Available in unique, attractive color options to match your personal style

What's in the box:

  • Pentax UP 8-16x21 Compact Binocular
  • Neck Strap
  • Carry Case
  • 2x Eyepiece Covers
  • Pentax Lifetime Limited Warranty