Pentax UP Papilio II 8.5x21 Binoculars

The Experience Macro

The Pentax UP Papilio II 8.5x21 binoculars are a unique optical instrument designed especially for nature enthusiasts interested in close-up observation of flowers, insects, bugs, and butterflies. Compact and lightweight, these binoculars combine fine handling with an exceptional close focus distance of only 50 cm, allowing detailed observation without disturbing the natural habitat.

Key Features

• New fully multi-coated optics for maximum light transmission and reduced flare
• Close focus capability down to 50 cm, unique in the market for macro observation
• Aspherical lens elements providing edge-to-edge sharpness
• High-quality BaK4 prisms enhancing light transmission and resolution
• Dual-axis, single body housing with synchronized interpupillary distance (IPD) adjustment
• Rubber-covered body for protection and improved grip
• Twist-up eyecups for comfortable viewing
• Fine diopter adjustment and fast, easy central focusing

Optical and Mechanical Specifications

• Magnification: 8.5x
• Objective lens diameter: 21 mm
• Prism type: Inverted Porro prism
• Lens coating: Fully multi-coated optics
• Prism glass: BaK4
• Field of view at 1000 m: 105 m
• Close focus distance: 0.5 m
• Exit pupil diameter: 2.5 mm
• Eye relief: 15 mm
• Eyecups: Pull-up multi-stop twist-up design
• Waterproof: No
• Tripod adapter: Adapter U compatible
• Dimensions (L x W x H): 116 x 110 x 55 mm
• Weight: 290 g
• Supplied accessories: Objective and eyepiece caps, carrying case, neck strap

Additional Optical Design Details

The binoculars feature an inner focus optical design that protects internal components from dust and moisture, ensuring durability and low maintenance. The long eye relief design allows comfortable viewing for eyeglass wearers and reduces eye strain during extended use. The helicoid four-stop eyepiece rings enable precise diopter adjustment for maximum viewing comfort.

Build and Handling

The dual-axis, single body housing provides synchronized IPD adjustment for ease of use. The rubber coating offers excellent shock resistance and grip, making these binoculars suitable for outdoor use. The compact inverted Porro prism design balances optical performance with portability, making the Papilio II an ideal companion for nature observation and macro viewing.