For lenses with 46mm filter thread.
For 28, 35 and 50mm lenses, e.g. Leica Elmarit M 28/2.8, Leica Summicron M 28/2, Zeiss Biogon T 28/2.8, Ultron 28/1.9, Hexanon 28/2.8, Zeiss Planar 35/2, Hexanon 35/2, Leica Summilux M 35/1.4 ASPH, Leica Summilux M 50/1.4.
Black.
Step up ring available for lenses with 48mm filter thread.