blue bubble: 20150405-DSC07119_Rodenstock Karat Heligon 50 mm F2.0 from Agfa Karat 36 modified to L39 mount
blue bubble: 20150405-DSC07120_Rodenstock Karat Heligon 50 mm F2.0 from Agfa Karat 36 modified to L39 mount
blue bubble: 20150405-DSC07130_Rodenstock Karat Heligon 50 mm F2.0 from Agfa Karat 36 modified to L39 mount