UP Zoom Series

PENTAX quality and clarity are within reach, at a price that’s within reach, too. These compact porro-prism models feature a dual-axis, single body design with synchronized eyepiece adjustment. Aspherical lens elements give you edge-to-edge sharpness. Clear images and clearly affordable.

* :
Color required.



  • Fully-multi-coated optics assure maximum light transmission resulting in high quality viewing. Every surface of every element is fully coated minimizing internal glare and flare and giving a bright clear view.
  • Unique Uni-body design enhances durability by locking objective lenses in a single housing and synchronizing the eyepiece movement. This minimizes moving parts and assures these binoculars will function properly and clearly for years to come.
  • Aspherical lens elements, which are critical in compact binoculars, provide exceptional edge-to-edge sharpness. This assures that items on the edge of your field of view are just as sharp as those in the center.
  • Offering a user-selectable magnification from 8 to 16 times.
  • The UP 8-16×21 Zoom is offered in unique, attractive colour options that match your personal style.

UP Zoom Series

TypePorro-prism centre focusing (Linked-dual-axis)
Model No.61961 – UP 8-16×21 – Black
Model No.61962 – UP 8-16×21 – Brown
Model No.61963 – UP 8-16×21 – Green
Eye Relief14 mm (8X) to 11 mm (16X)
Magnification8 – 16X
Objective Lens Diameter21 mm
Real Field of View5º (8x) to 3º (16x)
Field of view at 1000m87 m (8x) to 52 m (16x)
Field of view at 1000 yards261 ft. (8x) to 156 ft. (16x)
Exit Pupil2.6 mm (8X) to 1.3 mm (16X)
Relative Brightness6.7 (8X) to 1.7 (16X)
Diopter AdjustmentCenter Pop-up
Diopter Adjustment Range±4m-1 (8x)
Eye Width Adjustment Range57 to 72 mm / 2.2 to 2.8 inches
Focusing Range3 m to infinity / 9.8 ft. to Infinity
Eyepiece RingHelicoid eyepiece ring (3 click stop)
Height & Width111 x 111 mm / 4.4 inches x 4.4 inches
Thickness55 mm / 2.72 inches
Body ColorBlack, Brown and Green
Apparent Field of View38.5º (8x) to 45.5º (16x)
Weight310g / 10.9 oz.
Lens Construction (Objective lens / Eyepiece lens)2 elements – 1 group / 4 elements – 3 groups

Product Comparison

You have added to your Product Comparison!