MC Cosinon-S 50mm f/1.4 is a fast standad lens with multi-coating for the 35mm cameras.
The lens gives rather soft pictures when diaphragm is wide open but stopping down to f/2.8 improves the situation. The lens is perfect for portrait photography on digital cameras. It produces soft and smooth bokeh. Aperture ring does not have any intermediate values so only full stop is available.