For screw fasteners — M52×0,75. Limits of the opening scale: 1:2-1:16. The close focus limit is 0.5m. Mounting location of the light filters: front. Correctly process the selection of the adapter in order for the diaphragm to work in manual mode, you need an adapter with a "shelf" to press the diaphragm pusher.
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The Lens is from best KMZ factory is clean, fungus free etc.
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There is the start of the prism separation, see pics. 1987 model lens. Lens in very nice condition, see pics. Focus & aperture work well. Front cap only.
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HELIOS-44M-4 F2 58mm LENS. lens in very nice used condition, see pics. Lens (1984) focus & aperture work well.
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Focal length: 58mm (58.60 mm). Rear vertex focal length: 38.05 mm. Front vertex focal length: -34.25 mm. Distance from the first to the last surface: 39.80 mm.
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No 8400856. Lens body + clip on front cap + rear push on M42 cap. Helios-44M-4 58mm f2 manual focus lens (produced in USSR). (Can be used on other mounts with a suitable adapter that has a flange, which holds the rear pin in, so aperture changes can be made on the lens itself).
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Helios M44 - 4 lens. Exterior in good condition, some scuffs marks on front and focus ring, no more than expected for a lens of this age. Some oil on aperture blades, not much but they are a little sticky. They move well after a couple of presses on the aperture button. Small amount of fungus around the edges of the front lens glass and some tiny scratches I can only notice when looking closely at a light, I don't believe they will effect shots taken. Please refer to the photos to see the condition for yourself. No front or back lens caps unfortunately.
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(Focal length: 58mm (58.60 mm). Rear vertex focal length: 38.05 mm. Front vertex focal length: -34.25 mm. Distance from the first to the last surface: 39.80 mm. Resolution (0/10/20 mm) 3): 46/33/26 lines/mm.
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