Pentax 8-16x21 UCF-Zoom II, Dual-Axis Weather Resistant Porro Prism Binocular with 5.0 Degree Angle of View at 8x, U.S.A.


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About Pentax 8-16x21 UCF-Zoom II

The 8-16x21 UCF Zoom II binocular stands alone. This rugged little beauty gives you extraordinary power in a compact and rugged design. A magnification range of 8X to 16X will get you closer to your subject. A tough rubberized exterior that resists scratches, dust, dirt, and shock. Perfect alignment to eliminate headaches. And PENTAX's super multi-coated lenses allow more light to enter while eliminating irritating glare and flare. Packed with performance and portable enough to take anywhere, the 8-16x21 UCF Zoom II binocular is the perfect traveling companion.

Pentax 8-16x21 UCF-Zoom II Features

  • Central fingertip control includes focus, locking diopter, and zoom control
  • Black rubber housing to protect against dust and scratches
  • Revolutionary dual-axis, single body housing with synchronized eye-piece adjustment to assure correct optical alignment for comfortable viewing
  • Helicoid-style eyepiece rings for extra viewing comfort
  • Fully multi-coated optics to eliminate harmful ultraviolet rays while improving light transmission for high contrast images with no glare or flare
  • Inverted porro prism design results in a light weight, compact body
  • High quality BaK4 prisms transmit more light at the edges to enhance illumination for easier viewing in dim light
  • Limited lifetime warranty
  • Fast and easy center focusing for handling ease

Pentax 8-16x21 UCF-Zoom II Specifications

Type of Prism
Porro prism
8x to 16x
Objective Size
Field Of View at 1000 Yards
261 ft to 156 ft
True Angular Field of View
5.0 to 3.0 degree
Apparent Angular Field of View
40 to 48 degree
Exit Pupil
2.6mm to 1.3mm
Eye Relief
14mm to 11mm
Relative Brightness
6.7 to 1.7
Diopter Adjustment
Lens Coating
Lens Construction:
Objective Lens: 2 elements in 1 group
Eyepiece Lens: 4 elements in 3 groups
Rubber Coated
8x to 16x with central fingertip control
Close Focus Distance (ft)
9.9ft (3M) to infinity
Eye Width Adjustment Range
2.2" - 2.9" /56mm to 73.5mm
Special Feature(s)
Dual axis single body housing
Helicoid style eyepiece rings
Limited Lifetime warranty
H 22" x W 44" / 55mm x 111mm
Thickness: 4.4" / 111mm
9.9 oz / 280g
Helicoid Type eyepiece ring
Limited Lifetime Pentax Warranty
Mfr #

Pentax 8-16x21 UCF-Zoom II Reviews

Reviewed by 2 customers


Pentax 8-16x21 UCF-Zoom II


from Newark, CA  -  Casual/ Recreational

Nice quality with clear view. Zooming in or out requires focus adjustments. Nice popout lens correction adjustment.

(1 of 1 customers found this review helpful)


I like it


from Madison, WI  -  Casual/ Recreational

Easy to use


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Questions about this item:

Shopper  Why Did You Choose This?
MICHAEL R  If you want compact, yet excellent quality binoculars, you will not regret this purchase.
Shopper  is there a case with these binoculars?
MICHAEL R  Yes, there's a soft cloth case with these binoculars. They are excellent quality and well worth the purchase price.
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