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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.
|Eye Width Range||56-74 mm|
|Additional Information||Lens Construction:Objective Lens: 2 Elements in 1 Group; Eyepiece Lens: 5 Elements in 5 Groups; Features:Diopter Adjustment Range: +/- 4 m-1; Diopter Adjustment: Click-stop adjuster built in right eyepiece; Eye Width Adjustment Range: 56mm to 74mm; Focusing Range: Approx. 1.6ft to Infinity; Eyepiece Ring: Helicoid type; Vergence Correction: Focus-coupled correction mechanism|
|package contents||Compact Papilio 8.5x21 Binoculars; Eyepiece Lens Caps; Case; Neck Strap|
|Product Name||Papilio 8.5x21 Binoculars|
|Maximum Exit Pupil||2.50 mm|
|manufacturer||Ricoh Imaging Company, Ltd.|
|Dioptric Correction Range||± 4.0 diopters|
|Maximum Angular Field of View (Apparent)||51°|
|Maximum Angular Field of View (Real)||6°|
|Maximum Eye Relief||15 mm|
|Maximum Field of View @ 1000 yd||315 ft|
|color||black; dark gray|
|warranty length||limited lifetime|
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