Leica Summicron-R 90mm f/2 - Leica R Mount

The Summicron-R 90mm f/2 is a fast telephoto prime lens for the Leica R SLR system. It is renowned for its sharpness even at wide apertures and its smooth bokeh, making it a preferred choice for portraiture and low-light photography. The lens features a built-in telescopic lens hood and a robust mechanical design typical of the Leica R series, providing excellent tactile feedback during manual focusing. When inspecting a used Summicron-R 90mm, check the built-in hood for smooth operation and ensure it does not slide down freely. SDS examines the aperture blades for oil contamination, which can lead to slow response times. The focus action should be buttery smooth across the entire range, and the glass should be free from the delamination or 'balsam separation' that can occasionally affect older telephoto designs.