Pentax Papilio 8.5x21 Binoculars BaK4 Prism Rubber Coverd Frame Black and Gray Finish with Case 62216

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The Pentax Papilio 8.5x21 Binoculars were named for the Latin word for butterfly, and they are the perfect choice for insect and bird observation in the field or in museums and galleries. Featured in 8.5x21, the Papilio offers a minimum focusing distance of approximately 1.6 feet and incorporates new design technology that automatically compensates for the misalignment of right and left image fields at close ranges. Featuring fully multi-coated optical elements, high-refraction BaK4 glass prisms, a long 15 millimeter eye relief, and a protective rubber housing, Papilio is a great choice for spectator sports, hiking and travel as well.

Specifications and Features:
Ideally suited for viewing insects, birds, artwork or any other object at close ranges
C.L.O.S.E. (Convergent Lens Optical System Engineering) able to focus down to 1.6 feet
Tough rubber covered exterior provides a sure grip and protects the internal mechanisms
Sleek, contemporary ultra-compact body with unibody construction
Revolutionary dual-axis, single body housing with synchronized eye-piece adjustment to assure correct optical alignment for comfortable viewing
Fast and easy center focusing for handling ease
Helicoid 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
High quality BaK4 prisms transmit more light at the edges to enhance illumination for easier viewing in dim light
Binocular Type: Center focusing, porro-prism
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 degr ees
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
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 and dark gray
Height Width: 4.6" x 4.3"
Thickness: 2.2"
Weight: 10.2 oz
Accessories: Eyepiece lens caps, Case, Neck strap
Vergence Correction: Focus-coupled correction mechanism