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DESCRIPTION : MTO-500 500 mm f / 8.0 is a light-focus mirror-lens lens for 35mm SLR cameras with m39 thread. It is used for shooting distant objects. The design of the lens does not allow the use of an iris diaphragm. Type: Constant focal length (fixed) Focus: Manual focus System: M39 Optical scheme: 4 lenses and 3 mirrors Features: Mirror-lens Focal length 500mm. Max. aperture f / 8.0 Min. aperture f / 8.0 There are no petals in the diaphragm MDF (m) 2 Filter (mm) 77 Weight (gr.) 1500 Length (mm) 190 Angular field of view: 5 degrees. Light transmittance: not less than 0.58 Resolution in the center of the frame: not less than 35 lines / mm Resolution at the edge of the frame: at least 22 lines / mm The largest diameter of the frame: 101mm
CONDITION : Good condition. Everything is workable. Has very little traces of use.