Konica's fast AR wide — the ultra-coated 28mm f/1.8 UC Hexanon for low-light shooting.
The Konica UC Hexanon AR 28mm f/1.8 was a fast wide-angle prime for the Konica AR bayonet, part of Konica's ultra-coated UC line for the Autoreflex SLR system. A 28mm at f/1.8 was an unusually bright wide for its day, positioning this lens as a specialist fast wide within the AR range.
This manual-focus Konica AR lens has a 28mm focal length and a maximum aperture of f/1.8, making it one of the faster wides of its class. The UC designation marks Konica's improved multi-coating. Element count, filter size and minimum focus are not verified here and are left out rather than guessed.
The bright f/1.8 aperture lets the 28mm work in dim interiors and at night while still giving a wide field for context. It suits available-light street and travel work where a fast, moderately wide view is wanted, and wide open it separates a near subject from a softly rendered background.
The UC Hexanon 28mm f/1.8 is prized among Konica users for its speed and can command higher prices than slower wides. Inspect for haze and coating wear on the front element, check that the diaphragm is free of oil, and test the focus helicoid. It adapts well to mirrorless via an AR adapter for full manual use.