Nikon 7×50 WX IF Waterproof Porro Prism Binocular with 10.7 Degree Angle of View, Black

About Nikon WX 7×50 IF The Binocular of the Century Since its first endeavor into the world of optical products in 1917, Nikon’s affinity for binocular innovation has delivered myriad sensational and extraordinary views to the eyes of the world. Now, with a full century of experience to draw from, Nikon raises the critical eyes of optics aficionados to a level thought unachievable. Introducing Nikon WX. More than a lesson in optical achievement, WX speaks volumes towards catapulting its user into the frontier of incredible sharpness throughout a seemingly endless viewing periphery. Not only will this super-wide field of view seemingly transport an entire constellation of crystal-clear imagery to the eyes of the beholder, but do so with the amazing realism that has become Nikon’s hallmark for 100 years. The 100th anniversary models bear this commemorative logo. This is Where a Century of Innovation Takes You Eyepieces feature unprecedented optical performance and a super-wide field of view. Apparent field of view of 66.6 Degree . Engineered to minimize astigmatism and coma aberration and provide a sharp and clear image, while the sharpness of the image at the center of the field is achieved all the way to the periphery of the super-wide field of view. Field Flattener Lens System The Field Flattener Lens System is employed for compensating curvature of field from the center to the very edge of the periphery, while realizing a super-wide field of view. Assuring a sharp and clear image across the entire super-wide field of view, this lens system allows you to take in a wide-sweeping view of star clusters or galaxies, while individual stars can be clearly seen as sharp points. A Comprehensive Optical System that Includes Your Eyes in its Design With such a super-wide field of view, images in peripheral areas would typically become distorted and change noticeably as the binocular is panned. The WX’s unique optical design deliberately retains enough pin-cushion distortion to enable comfortable observation. High-quality Multilayer Coating High-quality multilayer coating, providing uniformly high light transmittance across the entire visible range, is applied to all lenses and prisms to realize a more natural, clearer view. The colors of stars in the night sky are reproduced with fidelity. ED (Extra-low Dispersion) Glass ED glass elements employed in each tube compensate for chromatic aberration that causes color fringing at the very edge of the field of view. Multiple ED Glass elements result in a contrast-rich and high-resolution image. All lenses and prisms are free of lead and arsenic, under the Nikon Green Procurement Standards. Abbe-Koening Prisms These prisms, which feature total reflection on all surfaces with a high transmission rate, are utilized for a brighter field of view. Phase-correction coatings on roof (Dach) surfaces of these Abbe-Koenig prisms compensate for phase shifts of light when reflecting inside prisms, resulting in high-resolution, high-contrast images and a slim body design. Long Eye Relief Optical design that realizes both a super-wide field of view and long eye relief. Eyeglass wearers can also enjoy a full, clear super-wide field of view. Rubber eyecups are designed to be removed for cleaning eyepieces. Eyepiece frame is designed in a flat shape for easy maintenance of details. Straight Helicoid Diopter Adjustment Ring and Turn-and-Slide Eyecups The diopter adjustment ring employs a straight helicoid design. Eyepieces move back and forth in a straight line, and the lenses themselves do not rotate, ensuring the optical axis is not decentered during diopter adjustment. Turn-and-slide rubber eyecups with six-click adjustment facilitate easy positioning and click intervals become finer as the eyecups are extended, for easier adjustment by non-eyeglass users. Waterproof and Fog proof Structure that Withstands Severe Conditions Waterproof structure that will not be affected if submerged in water to a maximum depth of 16.4 feet / 5 m for 10 minutes. (Not designed for underwater usage). Airtight structure with a nitrogen-filled body that prevents the inside of the optical system from fogging and resists mold even with significant changes in temperature. Wide operating temperature range of -4F to +140F / -20C to + 60c enables use in severe conditions. Magnesium alloy is utilized in body construction, resulting in a sturdy, lightweight body that facilitates handheld viewing. Accessories that Support Comfortable Astronomical Observation Comes with an exclusive tripod adapter TRA-4. 1/4-in. (ISO1222) tripod screw enables attaching to a tripod. WX binocular’s exclusive case is supplied for storing the binocular and accessories. Nikon WX 7×50 IF Features Super-Wide Field of View (Apparent FOV: 66.6 Degree for 7×50 IF) Field Flattener Lens System for edge-to-edge sharpness and clarity Abbe-Koenig prisms, with total reflection on all surfaces for a high light transmission rate Long Eye Relief High-quality Multilayer Coating on all lenses and prisms ED (Extra-low Dispersion) Glass corrects chromatic aberration that causes color fringing and realizes a contrast-rich and high-resolution image. Three pieces of ED Glass in each tube Individual Eye Focus Included Tripod Adapter and hard case. Objective lenses have filter threads to accept a 55mm filter (P=0.75)