Connecting thread for the lens - M42×1. Thread of lens barrel for light filter 49×0.75 35.5×0.5. Perforated film width - 35 mm. Tripod socket thread 1/4″ 1/4″. Seat for pull-on hood Ø55 mm Ø37 mm. Viewfinder image field size - 20 × 28 mm.
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