Vivitar's 135mm for Konica — the EE Coupled f/2.8 telephoto for AR mount.
The Vivitar 135mm f/2.8 EE Coupled in Konica AR mount is a fast telephoto from Vivitar, one of the most prolific third-party lens brands of the 1970s–1980s, with full Konica AR automatic exposure coupling. Vivitar lenses were produced by various OEM manufacturers and quality varied by production run and series.
The lens delivers 135mm at f/2.8 with Konica AR EE coupling for automatic exposure on compatible Konica bodies, manual focus, and full-frame coverage.
Vivitar's diverse sourcing means optical quality in these lenses varied — some Vivitar 135mm f/2.8 lenses are well-regarded while others are mediocre. Identifying the specific manufacturing series (often printed as a three-digit series number on the lens) helps assess expected quality.
Identify the production series number if present on the lens. Test aperture blades for oil at f/2.8. Check focus ring smoothness. Inspect elements for haze. Test EE coupling on a compatible Konica body.