expertbinocular * com Product Info for Kenko Lens2scope Adapter for Nikon F Mount (Angled View) Kenko black Lens2scope Adapter for Nikon F Mount is a simple accessory that converts any Nikon F Mount lens into a spotting scope. Its lightweight body houses a compact roof prism, lenses, and an eyepiece just like a traditional spotting scope and with the lens is attached, the whole system acts as a spotting scope. This model features an angled eyepiece that is set at a 45�° angle for more comfortable viewing while sitting, standing or laying. Kenko K-LS10-NFAB Specs Prism System Roof prism Focal Length 10 mm Apparent Field of View 42�° Eye Relief 20 mm Dimensions 7.1 x 4.3 x 3.1" / 18.0 x 11.0 x 8.0 cm Weight 6.5 oz / 185.0 g Packaging Info Package Weight 0.635 lb Box Dimensions (LxWxH) 6.1 x 4.35 x 3.5"