LONG FOCUS JUPITER-21M 200mm F/4 LENS FOR M42 ZENIT, PENTAX, OR BESSAFLEX camera

Jupiter-21M is a long focus single-coated lens for different SLR cameras. Letter "M" means that the lens has spring blend "jumping" aperture. the lens is based at ideas and optical scheme of Sonnar Carl Zeiss lens. All the Soviet plants which issued photo equipment (include most famous KMZ, LOMO and Litkarino plants) mostly issued military equipment, and little part only were for civil purposes, and those civil goods had enough high quality to receive World glory for best ratio price/quality. In the main, most all Soviet lenses are exceptionally good and this one is no exception! It can be used with a lot of digital Micro 4/3 cameras with simple and inexpensive adapter. ITEM'S CONDITION: LIKE NEW The glass is very clean, without any separations, scratches or fungus. Aperture blades open and close smoothly, focusing is smooth too. Cosmetically the lens looks almost never used before... just examine item's photos, please.. All functions are available. * Optical registration 45.5mm * Focus 200 mm. * Angle of view 12 degrees. * Relative aperture 1:4.0 (up to 1:22, with 1/2 f-stop clicks). * The lens has very nice "A"-"M" aperture selector, it will very useful if You'll use different devices (for example macro rings) which have no springblend aperture driver. * Mounting M42 x 1mm groove, known as Pentax Thread Mount, same with a lot of old SLR cameras (Practica, Chinon, Yashika, Bessaflex etc). * Mounting for modern SLR & dSLR cameras will not bring any trouble with well-spread M42 adapters. * The lens is well-applicable for digital cameras with micro 4/3 system and other with working distance 45.5mm and less, with the use of adapters: All Sony NEX, Olympus, Panasonic: Lumix DMC-G1, DMC-GH1, DMC-GF1, DMC-G2, DMC-G10, Epson, Samsung and other. * Lens can be used with RED, Canon EOS or other cameras and DOF systems if you have corresponding adapter. * Resolution of the lens (in pairs of lines per 1mm) is not less than 50 in the center and 36 on the edge of frame. * Focusing from 1.8m. * Filter mount M 58x0.75mm mm. * Collapsible built-in lens-hood. * Pretty in using. * Good black coating. * The lens was made for export in 1982 at VOMZ at Vologda city in USSR (Russia). Engraved on English: We are more than happy to welcome any international bidders!!! We ship the item FREE WORLDWIDE! Item will be shipped via Russian Mail service immediately upon receipt of your payment. Shipping time is mostly about 2-3 weeks to receive the item as Registered Air Mail package with the tracking number (or by registered and insured Air Mail parcel for heavy items), but sometimes (but not very often) it can be up to two month. If you need really fast shipping, DHL and UPS are available here, but shipping a metal 35mm camera can cost over $100, thus this kind of shipping is rarely used.