Format: 16mm (cinema cameras, technical)

Type: Fixed focal length (fixed)

Focus: Manual Focus

System: Other, Other

Optical design: 4 lenses in 3 groups

Objectives RO-51 (2.8/20) - a simple high-aperture four-lens anastigmat for amateur and professional film cameras working on 16 mm film with a frame size of 7.5x10.4 mm. Produced in a frame for the "Kyiv 16S-2" camera. Thread M27x0.75.

The objective lenses are chemically coated.