Soligor's wide-angle for Konica — the budget 28mm f/2.8 in AR mount.
The Soligor 28mm f/2.8 EE for Konica AR is a budget wide-angle prime from the third-party brand Soligor. The EE coupling enables auto-exposure on Konica cameras. At 28mm f/2.8, it provides basic wide-angle coverage. A budget alternative to the Hexanon 28mm lenses in the Konica AR system.
Basic optical quality — Soligor lenses were budget alternatives. Sharpness is acceptable when stopped down. The f/2.8 is faster than the Hexanon f/3.5 alternative. The EE coupling provides automatic exposure convenience. Build quality is basic. The Hexanon alternatives are optically superior.
Konica AR mount with EE coupling. Filter thread varies. Weight varies. Build quality is basic. Manual focus. The EE coupling enables auto-exposure. The Konica AR mount is discontinued. The Hexanon 28mm is preferred for optical quality.
Very cheap. Not recommended when Hexanon alternatives exist. The EE coupling adds convenience but the optics are basic. The faster f/2.8 is the only advantage over the Hexanon f/3.5. Only for AR system owners who specifically need the faster aperture at minimum cost.