Pentax UP 8x25mm Porro Prism Binoculars Black

Pentax UP 8x25mm binoculars deliver 8-power magnification through a Porro prism design, with a field of view of 354 feet at 1,000 yards. The uni-body construction locks the objective lens in a single housing while synchronizing eyepiece movement, enhancing durability. Aspherical lens elements keep edge-of-field sharpness consistent with the center. Eye relief measures 15mm, the objective lens diameter is 25mm, and the focusing range extends from 6.27 feet to infinity. The helicoid eyepiece ring allows smooth manual focus adjustment. Exit pupil is 3.1mm with a relative brightness rating of 9.6.