Google translate says: There is no data on this lens 2.5/24. According to one version, the lens, with parameters 2.4 / 24, and having the name "Mir-32", developed at the GOI, was to go into series under the same name, but with a slightly changed aperture. However, it was not mass-produced. The angle of view is 84 °, 9 lenses in 8 components. Resolution (center / 10 mm / 20 mm) - 53/36/18.