Pentax 8.5x21 U-Series Papilio II Binoculars

The compact and lightweight 8.5x21 U-Series Papilio II Binocular combines aspherical optical elements and BAK4 Porro prisms to deliver edge-to-edge image sharpness with a 51ø apparent angle of view. The optical elements are also fully multicoated to provide a high transmission of light. With a 8.5x magnification and 21mm objectives, you obtain a notable magnification, insignificant image jitter due to unsteady hands, and a compact form factor. You can easily spot your targets with a wide 6ø angular field of view and quickly bring them into focus with a centre focus wheel. In addition to observing distant scenes, birds and game, the minimum focus of 20" allows you to study in detail close objects like butterflies, animal footprints, marks or landscape features. To reduce image jitter while observing distant objects or for prolonged observations, you can connect the binocular to a tripod via an integrated 1/4"-20 socket. The binocular also features a 2.5mm exit pupil, a 15mm eye relief, an interpupillary and a dioptre adjustments.

The binocular is very compact, lightweight, and features a single piece frame that houses objectives, which allows for a synchronised interpupillary adjustment. To accommodate eyeglasses wearers, the binocular offers twist-up rubber eyecups. Also included are a carrying case, a neck strap, and eyepiece covers.

Key Features

Optical Performance

• BAK4 Porro prisms
• Aspherical optical elements offer edge-to-edge image sharpness
• Fully multicoated optics
• Angular field of view: 6ø
• Minimum focus of 20"
• Interpupillary adjustment
• Dioptre adjustment

Construction Details

• Single piece objectives' frame allows for a synchronised interpupillary adjustment
• Contoured body provides a comfortable grip
• Centre focus knob offers an easy focusing
• Twist-up rubber eyecups
• Integrated 1/4"-20 tripod socket

Specifications