PF-85EDA Spotting Scope

Features Bright, clear field of view The PENTAX PF-85EDA features ED (Extra-low Dispersion) glass optical elements to effectively minimize chromatic aberrations. It also features a combination of a full multi-coating process applied to all optical elements, and a phase coating process applied to the roof prism to deliver a clear, high-contrast field of view for high-quality observations. Nitrogen-filled body for a clear field of view without fogging The interior of this spotting scope is filled with nitrogen gas to prevent fogging caused by sudden temperature changes. This assures a clear field of view even in demanding weather conditions. Compact body with outstanding waterproof performance Despite its large objective lens, this spotting scope is designed to be compact and highly portable, thanks to the incorporation of the latest optical design featuring a roof prism. This compact design makes it easy to be carried to a variety of destinations. Its compact dimensions and portability also come in handy in various types of nature and astronomical observation, including birdwatching. By inserting a dust-proof glass element in the eyepiece mount, this spotting scope is designed to be airtight for outstanding waterproof performance (equivalent to JIS Class 7, with water resistance to a depth of one meter)* for dependable use even in the rain or mist. * This model cannot be used underwater. The smc PENTAX Zoom Eyepiece 8-24mm (included in the optional eyepiece kit) is not designed to be waterproof. Slanted-barrel design The eyepiece section is slanted upward at a 45-degree angle, allowing subject observations over long periods of time in a natural, comfortable posture, without the need to look up. Compatibility with a range of eyepieces The eyepiece mount features an American-standard 31.7mm (1.25-inch) sleeve to accept a range of eyepieces, letting you choose the eyepiece that best accommodates a specific application. Other Features Built-in lens hood to shield out excessive light and protect the objective lens surface Tripod receptacle with a click-stop rotation mechanism, for easy twisting of the lens barrel to position the eyepiece at the most comfortable angle   Specifications Model: PF-85EDA Type: Slanted-barrel roof-prism spotting scope (45° tilted) Lens Construction: 5 elements in 4 groups, ED glass elements with 85mm effective aperture Eyepiece Ring Diameter: 31.7mm (1.25 in.) Focus Range: Approx. 5m to infinity Eyepiece Ring: Collet type Color: Black Dimensions: 347(W) x 116.5(H) x 101.8(D) mm 13.7(W) x 4.6(H) x 4.0(D) in. Weight: Scope only: approx. 1,600g / 56.5 oz. Eyepiece Kit: approx. 2150g / 76 oz. Waterproof Rating*: JIS Class 7 Inlcluded Accessories: Objective lens cap, Eye lens cap, Case * This model cannot be used underwater. smc PENTAX Zoom eyepiece 8-24mm, which is included in the Eyepiece Kit is not waterproof.   Eyepiece Kit Zoom 8.0-24.0 Magnification 20x 60x Real field of view 1.9° 1.0° Apparent Field of View 38° 60° Field of view at 1000m 33ｍ 17ｍ Field of view at 1000 yard 99ft 51ft Exit pupil aperture 4.3mm 1.4mm Eye relief 18mm 22mm (Distance from eyepiece rubber in parentheses.) 5mm 9mm Attachment diameter 31.7mm Relative brightness 18.1 2.0   With other eyepieces XW7 XW10 XW14 XW20 XF8.5 XF12 XF Zoom 6.5-19.5 Magnification 71x 50x 36x 26x 59x 42x 26x 78x Real field of view 1.0° 1.4° 2.0° 2.7° 1.0° 1.5° 1.6° 0.8° Apparent Field of View 70° 70° 70° 70° 60° 60° 42° 60° Field of view at 1000m 17ｍ 24ｍ 35ｍ 47ｍ 17ｍ 26ｍ 28ｍ 14ｍ Field of view at 1000 yard 51ft 72ft 105ft 141ft 51ft 78ft 84ft 42ft Exit pupil aperture 1.2mm 1.7mm 2.4mm 3.3mm 1.4mm 2.0mm 3.3mm 1.1mm Eye relief 20mm 20mm 20mm 20mm 18mm 18mm 11mm 15mm (Distance from eyepiece rubber in parentheses.) 15mm 15mm 15mm 15mm 13mm 13mm 5mm 9mm Attachment diameter 31.7mm 31.7mm 31.7mm 31.7mm 31.7mm 31.7mm 31.7mm Relative brightness 1.4 2.9 5.6 10.7 2.1 4.1 10.7 1.2