Pentax 62002 U-Series 8.5x21 Papilio II Binocular

The Pentax Papilio II 8.5x21 binoculars occupy a unique position in the compact binocular market by combining standard distance viewing with an extraordinary 20-inch minimum focus distance. This close-focus capability transforms the Papilio II from a conventional compact binocular into a tool for macro-level observation—butterflies on a nearby bush, the texture of mineral specimens, or fine details in artwork become accessible without switching to a magnifying loupe or macro lens. The 8.5x magnification paired with BAK4 Porro prisms and aspherical lens elements produces bright, sharp images with minimal edge distortion, while fully multi-coated optics across every glass surface ensure maximum light transmission through the optical path.

Pentax's uni-body design is central to the Papilio II's long-term reliability. By locking both objective lenses into a single housing and synchronizing the eyepiece movement mechanically, the design minimizes the number of moving parts that can fall out of alignment over years of use. At 10.4 ounces and just 4.57 x 2.1 x 4.33 inches, these binoculars travel easily in a jacket pocket, daypack, or the included carrying case. Twist-up rubber eyecups and 15mm of eye relief accommodate eyeglass wearers comfortably, while diopter adjustment and a 1/4"-20 tripod socket add practical versatility for extended observation sessions. For nature enthusiasts, educators, and hobbyists who value both close-up and distance viewing in a single lightweight optic, the Papilio II delivers a combination that very few binoculars can match.