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Papilio Binoculars 8.5x21

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Item Number: PTX PAP 85X21

Product Information:

  • No other binoculars like them on the market
  • C.L.O.S.E. (Convergent Lens Optical System Engineering) allows minimum focusing distance of 1.6 feet.
  • Ideally suited for viewing birds, insects, flowers, artwork / printed materials or any other object at close range
  • Revolutionary dual-axis, single body housing with synchronized eyepiece adjustment to assure correct optical alignment for comfortable viewing
  • High-quality BaK4 prisms for maximum illumination in low light
  • Fully multi-coated optics reduce glare and harmful UV rays while providing maximum light transmission and color quality
  • Fast and easy center focus design for handling ease
  • Tough rubber housing improves grip and shock resistance
  • Helicoid eyepiece rings for extra viewing comfort
Binocular Type:

Center focusing, porro-prism

Lens Construction:

Objective Lens: 2 elements in 1 group Eyepiece Lens: 5 elements in 5 groups

Magnification:

8.5X

Objective Lens Diameter:

21mm

Real Field of View:

6.0 degrees

Apparent Field of View:

51 degrees

Field Of View At 1000 Meters:

105m

Field of View at 1000 Yards:

315 ft.

Exit Pupil:

2.5mm

Eye Relief:

15mm

Prism:

Porro

Relative Brightness:

6.3

Diopter Adjustment Range:

+/- 4m -1

Diopter Adjustment:

Click-stop adjuster built in right eyepiece

Eye Distance Adjustment Range:

56mm-74mm (2.2" - 2.9")

Focusing Range:

Approx. 0.5m (1.6 ft.) to infinity

Eyepiece Ring:

Helicoid type

Body Color:

Black & dark gray

Height Width:

116mm x 110mm (4.6" x 4.3")

Thickness:

55mm (2.2")

Weight:

290g (10.2 oz.)

Accessories:

Eyepiece lens caps, Case, Neck strap

Vergence Correction:

Focus-coupled correction mechanism

Named for the Latin word for butterfly, PENTAX Papilio 8.5x21 binoculars are the perfect choice for insect observation in the field and in museums and galleries. The enhanced observation capability of the Papilio binoculars is made possible by a PENTAX Convergent Lens Optical System Engineering (CLOSE) mechanism. The CLOSE mechanism automatically slides the left and right objective lenses toward the center when the focus is fixed at a short distance.

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