Lens Zenit Helios 44M-4 44M 4 58mm 58 mm 1:2 - M42 mount. Zenit Helios-44M-5 Helios 44M 5 2/58 1:2 58Mm 58 Mm - M42. Zenit Helios-44-2 Helios 44-2 58Mm 1:2 - M42 Connection. Zenit Helios 44M-4 58mm. Zenit Helios-44M-6 MC 58Mm 1:2 Lens - M42 Mount.
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