Super Takumar 55mm F1.8

m42 스크류마운트 Super Takumar 55mm F1.8

1962: Super-Takumar 1:1.8/55 (first version) - fine knurls on aperture ring

1965: Super-Takumar 1:1.8/55 (second version) - coarse knurls on aperture ring

The following years saw one or two additional Super-Takumar variants with only minor changes

Weight : 215 g

Diam x Length : 49 mm

Filter Size Min. Focus : 45 cm

Max. Magnification : 0.17x (calculated)

Diagonal FOV (APS-C) : 29 degrees

Horizontal FOV (APS-C) : 25 degrees

Min. Aperture : f/16

Max. Aperture : f/1.8

Diagonal FOV (24x36) : 43 degrees

Horizontal FOV (24x36) : 36 degrees

Diaphragm Optical Construction :  Automatic 6 elements in 5 groups