Tele "mirror" Lenses with fixed aperture. "MTO" - an abbreviation from "Maksutov the Tele-Objective" or "Meniscal the Tele-Objective". On the World's fair in Bruxelles 1958 the set of lenses into which entered MTO-500, has been awarded - "Grand prix". In 1959 MTO-500 was awarded the Diploma of II degree VDNH the USSR.

Specification

Image size 24x36 mm
Focal length 500 mm
35mm film equivalent focal length for APS-C image size Approx. 800
Angle of view
Lens construction (elements/groups) 4/3
Aperture F8
Closest focusing distance (m) 4
AF actuator Mechanical
Filter diameter (mm) 77
Max. diameter x length (mm) 100x165
Weight (g) 1500

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