Focal length-200mm
Relative aperture - 1:4
Diaphragm is automatic Zenit EM type - from 4 to 22
Focusing, m: 1.8 to infinite
Resolution:
In center - 50:
at the edges - 36
Weight - 980gr
Jupiter-21 M
These Lens were produced by factory Vologda. (VOMZ and "LUCH")