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Pentax 8 -16 x 21 UCF II Zoom Binocular

Item #: 43751

Our Price: $139.99

Regular Price: $160.00

SAVINGS: $20.01 (13%)

With a magnification range from 8X to 16X, the UCF II Zoom binocular gives you incredible zooming ability with the convenience of a compact design. Features include an innovative dual-axis eye distance adjustment system, multi-coated optical elements, and high-refraction BaK-4 glass prisms. Perfect for the viewer on the go- whether it's bird watching, sporting events, wildlife, of indoor performance viewing.
  • Aspheric lens elements enhance edge-to-edge sharpness.
  • In-line control system positions zooming, focusing, and diopter adjustment together.
  • Pop-out right diopter adjustment knob.
  • Includes neck strap, carry case, and eyepiece lens caps.
  • Type: porro-prism center focusing, linked dual-axis
  • Objective lens: 2 elements in one group
  • Eyepiece lens: 4 elements in 3 groups
  • Magnification: 8X to 16X
  • Objective lens diameter: 21 mm
  • Angle of view: 5.0 (8X) to 3.0 (16X) degrees
  • Apparent field of view: 40 (8X) to 48 (16X) degrees
  • Field of view @ 1000 m: 87 m (8X) to 52 m (16 X)
  • Field of view @ 1000 yd: 261 ft (8X) to 156 ft (16X)
  • Exit pupil: 2.6 mm to 1.3 mm
  • Eye relief: 14 mm to 11 mm
  • Prism: BaK-4
  • Multi-layer coating: yes
  • Relative brightness: 6.7 to 1.7
  • Diopter adjustment range: center knob pop-up
  • Eye distance adjustment range: 56 to 73.5 mm
  • Focusing range: approx. 3 m to infinity
  • Eyepiece ring: helicoid type
  • Water-resistant: no
  • Weight: 12.6 oz.

Do you have questions about this product?

get answers from real customers and in-house experts with AnswerBox.

2 Questions | 2 Answers
Displaying questions 1-2
  • Q:

    What is significance of numbers ( 8 - 16X21). I am planning Safari to East Africa. I want compact binoculars. Not sure of magnification. Any suggestions?
    Asked on 2/27/2014 by Richard from New York

    1 answer

    • Staff Reviewer


      The Pentax 8-16 x 21 UCF II Zoom Binocular has the magnification power from 8 to 16. The 21 number represents the objective lens diameter in milimeters.

      Answered on 3/3/2014 by Bob from Campmor
  • Q:

    are these binoculars waterproof
    Asked on 10/4/2012 by knight from customer service

    1 answer

    • Staff Reviewer


      The Pentax 8 -16 x 21 UCF II Zoom Binocular are waterproof for rain, but not for submersion in water.

      Answered on 10/4/2012 by Steve from Campmor
Displaying questions 1-2

Do you have a question about this product? 

Binocular Size Compact
Magnification 8x - 16x
Lens Coating Multicoated
Housing Rubber Coated
Weather Resistant Yes
Water Proof No
Fog Proof Yes
Field Of View 261 feet
Minimum Focus 9.8 feet
Eye Relief 11 mm
Dimensions 4.4 x 4.4 inches
Weight 10.9 oz

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