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Pentax - 8-16x21 UCF II Zoom Binoculars


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Availability: Available - Ships in 2-4 Days


Available - Ships in 2-4 Days

Manufactured by: Pentax


The PENTAX 8-16X21 UCF Zoom II binocular boasts a magnification range of 8x to 16x. Despite being both compact and lightweight, PENTAX 8-16X21 sports excellent zooming capability.

Typical of the UCF models, the PENTAX 8-16X21 UCF Zoom II features an advanced dual-axis eye-distance adjustment system with high-refraction BaK4 glass prisms and multi-coated optical elements. Asperical lens elements are built in to the eyepiece optics.

For convenience and practicality this binocular is ideal, ready to perform at a moment's notice, whether your activity of choice is bird-watching, sports, nature observations or the theatre.


  • Central fingertip control includes, focus, locking diopter and zoom control
  • Black rubber housing protects against dust and scratches
  • Revolutionary dual-axis, single body housing with synchronized eyepiece adjustment to assure correct optical alignment for comfortable viewing
  • Fast and easy adjusting center focusing for handling ease
  • Helicoid style eyepiece rings for quick adjustment of eye relief
  • Fully multi-coated optical eliminate harmful UV rays while improving light transmission and contrast with no flare or glare.
  • Inverted porro-prism design results in compact, light-weight body
  • High-quality BaK4 prisms for maximum light transmission and illumination

/updated 05/23/14 Mark S







Additional Information

Name Pentax - 8-16x21 UCF II Zoom Binoculars
Manufacturer Pentax
Model 62217
Manufacturer Part No 62217
Diameter 21mm
Diopter Adjustment Range +/- 4 m -1 (8X)
Exit Pupil 2.6mm (8X) to 1.3mm (16X)
Eye Relief 14mm (8X) to 11mm (16X)
Eyepieces 4 elements in 3 groups
Field of View - Apparent 40 degrees (8X) to 48 degrees (16X)
Field of View - Real 5.0 degrees (8X) to 3.0 degrees (16X)
Included Accessories Eyepiece lens caps, Case, Neck strap
Linear Field of View (@1000 yds) 261 ft. (8X) to 156 ft. (16X)
Linear Field of View (@1000 m) 87m (8X) to 52m (16X)
Magnification 8 to 16X
Optical Coatings Multi-coating
Prisms Porro prism
Relative Brightness 6.7 (8X) to 1.7 (16X)