90–250mm · f/4.5
The Super Komura Zoom 90-250 mm f/4.5 is a compact, two-touch zoom from around 1970 with a constant aperture and good focus holding during zooming. Optical strengths include sharpness at f/4.5, excellent contrast, and good performance at f/5.6, though there is slight softness at 250mm and purple fringing in backlit scenes. Weaknesses include a protruding rear element and loose, creeping focus ring. It suits vintage lens enthusiasts seeking a lightweight, well-built zoom for manual focus use.