A very easy-to-handle universal polarizing filter, complete with two adapters to fit E39 and E46 filter threads, the more common Leica sizes. This allows you to use the filter on a number of Leica lenses with ease. As rangefinder cameras don't look through the lens of the camera, polarising filters can prove tricky to use. The Leica universal polarizer solves this problem for Leica-M users. A hinge flips the filter from covering the lens, to covering the viewfinder for easy composition and setting. Simply flip back over the lens for metering and shooting.