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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 TESSARmount 53 mmMaximum aperture f 9.0Minimum aperture - f 90Aperture Petals - 18Aperture scale - 9 11 16 22 32 45 64 90Focal length: 450 mm。

Serial number: 620095

[シリアルナンバー] 620095

Additional Information:Focal length, mm 301.2445 ° angular field of viewAperture limits 1: 9-1: 90Largest frame diameter 76 mmFront focal segment 293.37 mmRear focal segment 277.45 mmThe light diameter of the first surface is 33.5Light diameter of the last surface 34Industar-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。