16x-48x Magnification / Waterproof & fogproof / Built-in sliding sunshade / Multicoated optics for bright, clear image / Includes Vue-Thru Case & eyepiece # The Nikon ProStaff 16-48x65 Spotting Scope is part of the quality ProStaff spotting scope series offering exceptional Optical capabilities, a powerful Zoom eyepiece, high light transmission and superior ruggedness. It features a standard sliding hood and a special optical peep sight that gets you on your target faster than ever before. The ProStaff 16-48x65 can be close-focused to 13.1 feet, has a field of view at 1,000 yards of 126 feet, and an exit pupil of 4.1mm at 16x. The straight body 65mm scope is 11.5" long and features 15.2mm of eye relief at 16x. Objective Diameter: 65mm # Real Angular Field of view: 2.4 at 16x # Apparent Angular Field of view: 38.4 at 16x # Field Of View at 1000 yards: 126 feet at 16x # Close Focus Distance: 13.1 feet # Exit Pupil: 4.1mm at 16x # Relative Brightness: 16.8 at 16x # Eye Relief: 15.2mm at 16x # Dimensions: Length 11.5" x Width 4.1" (293x105mm)