This is a demonstration store. You can purchase products like this from Leica Store Miami.
The Leica E72 Filter Adapter makes it possible to mount Leica E72 filters on to the Leica 24mm f/1.4 Summilux-M Aspherical lens. Since this adapter ring features a hollowed out core, viewing thru the rangefinder is still possible. This also allows for polarizing effect to be judged directly through the viewfinder.