Kiron's fast wide-angle for C/Y mount — the 28mm f/2 with good optics at a budget price.
The Kiron 28mm f/2 Wide Angle is a fast wide-angle prime for the Contax/Yashica mount from the respected third-party manufacturer Kiron. Kiron lenses were well-regarded for optical quality that rivalled first-party offerings. The f/2 speed at 28mm was fast for the era, providing useful low-light capability. A hidden gem among vintage lenses.
Optical performance is good — Kiron earned respect for quality optics. Sharpness is respectable from f/2 and good by f/4. The fast f/2 at 28mm provides useful speed for street and documentary photography. Build quality is solid metal. Kiron lenses are undervalued relative to their optical quality due to brand obscurity.
Contax/Yashica mount, manual focus. Filter thread varies. Weight varies. Build quality is solid. The C/Y mount adapts easily to mirrorless via simple adapters — particularly Sony E-mount where the flange distance works well. Kiron lenses are increasingly appreciated by vintage lens enthusiasts.
Available at very low prices — Kiron's brand obscurity keeps prices down. Check smooth focus and clean optics. A hidden gem — good wide-angle optics at budget pricing. The C/Y mount adapts to Sony mirrorless. Worth seeking out for vintage lens enthusiasts who want quality at budget prices.