One of the unique things about the Leica M system is its ability to use lenses created over the past 75 years. I recently purchased a Leica 50mm summilux version 1, built-in 1959. Even after 50 years, this lens has phenomenal image quality and unique characteristics.
ISO 250 1/750 sec f1.4 50mm (Leica M9, Leica 50mm summilux ver 1, Lr 4, Aperture 3)
