Leica Summarit 50mm f1.5, early version in 1956, with product code SOOIA. This lens is an improved version of Schneider's Xenon 50mm f1.5 design, retaining the 5-group, 7-element optical formula but enhanced with new glass types for better performance. Before the Summilux arrived in 1961, it was Leica’s brightest large-aperture lens.
At wide-open aperture, it delivers a refined, soft rendering with a touch of glow, while stopping down significantly increases contrast, transforming it into a sharp, richly detailed performer. The weighty barrel lends stability when mounted on either a Barnack or M-series Leica, giving it a true "vintage lens" presence.
The distance scale is in feet, and it has an E41 filter thread. Being an early model, it also accommodates the original slip-on filters. The recommended hood is the square XOONS, designed specifically for this lens.
The lens is in beautiful condition with minimal signs of use, and the chrome plating on the knurled areas shines impressively. It underwent a full overhaul in 2024, resulting in exceptionally smooth operation of the aperture and helicoid. The interior has also been re-coated with a matte anti-reflective lacquer.
The glass shows only minor cleaning marks on the front and rear elements, with some light coating wear present. There are small, dot-like remnants of fungus spread across the rear element, but these are not advancing further. Additionally, as is often seen with Summarits, there are areas of coating loss on the rear surface of the aperture blades.
While these issues may have a slight effect in backlighting situations, the characteristic rendering of the Summarit remains intact. Test shots taken in-store yielded excellent results, showcasing delicate lines even at wide open aperture. The rangefinder coupling works perfectly, making this a practical and enjoyable Summarit lens for use!
