Multilayer-coated lenses for brighter images Multilayer coatings, which provide higher light transmittance across the entire visible light spectrum, are applied to the lens and prism surfaces that transmit light. This minimizes the loss of light due to reflection, thereby ensuring a more natural, clearer view. Lightweight and Durable Body Thanks to a fiberglass-reinforced polycarbonate resin, the PROSTAFF 5 is light enough to take anywhere and strong enough to be trusted on even the more extreme adventures. Turn-and-Slide Multi-Click Rubber Eyecups Nikon has manufactured the PROSTAFF 5 binoculars, as well as many other of its optics, with a high-eyepoint design. This provides a clear field of view for everyone, even when the user is wearing eyeglasses, with sufficient space between the user’s eye and the eyepiece lens. Enjoy Comfortable Viewing The turn-and-slide multi-click rubber eyecups allow users to adjust the eye-relief for a custom fit - providing a full field of view and maximum comfort during extended periods of use. Prostaff 5 12x50mm Prostaff 5 10x50mm Prostaff P3 8x30mm Add to Cart Add to Cart Add to Cart Customer Reviews 4.5 out of 5 stars 139 4.5 out of 5 stars 139 4.6 out of 5 stars 21 Price $226.95$226.95 $212.95$212.95 $125.95$125.95 Magnification 12x 10x 8x Objective Diameter 50mm 50mm 30mm Angular Field of View (Real) 4.7° 5.6° 8.7° Angular Field of View (Apparent) 52.4° 52.1° 62.6° FOV at 1000 yds 246 ft. 293 ft. 456 ft. Close Focus Distance 16.4 ft. 16.4 ft. 8.2 ft. Exit Pupil 4.2mm 5mm 3.8mm Eye Relief 15.5mm 19.6mm 15.4mm Weight 27.9 oz. 28.7 oz. 16.75 oz.