Overview

The Ohnar 300mm f/5.6 Mirror is a rare reflex lens with a variable aperture, unusual for mirror lenses. Optical strengths and weaknesses are not detailed in the excerpts. Build and handling are not described, but the lens has a distinctive appearance distinct from the standard version. It suits collectors or those curious about unconventional mirror lens design, though the Tamron SP 350mm is noted as a comparable alternative.