TESSAR M53 X 0,75mm ロシア(ソビエト連邦)インダスター11M industar-11M 大判折りたたみカメラ Format : 9MM x 12MM ~ 30MM x 40MM TESSAR ( 130x180mm)フィルムサイズWOODEN , 焦点距離は450mmです。 レンズの開放F値は9です。 Format : 9MM x 12MM ~ 30MM x 40MM TESSAR mount 53 mm Maximum aperture f 9.0 Minimum aperture - f 90 Aperture Petals - 18 Aperture scale - 9 11 16 22 32 45 64 90 Focal length: 450 mm。 Serial number: 720562 [シリアルナンバー] 720562 Additional Information: Focal length, mm 301.24 45 ° angular field of view Aperture limits 1: 9-1: 90 Largest frame diameter 76 mm Front focal segment 293.37 mm Rear focal segment 277.45 mm The light diameter of the first surface is 33.5 Light diameter of the last surface 34 Industar-11M 450mm f / 9 is a reproduction orthoscopic lens, according to the optical scheme - tessar。 It has a good correction of chromatic and spherical aberrations。 This lens was used in reproducing installations, such as FG-2M, and could be used on large-format cameras (FC, FKP, FKD, FKR)。 Equipped with an 18-blade iris diaphragm。 Resolution: center / edge (lin / mm) - 35/14 with supported formats - from 9x12 to 30x40 cm。 Single-layer enlightenment by chemical method。 Landing thread SPM 53x0.75 |