The warming Sepia solid colour effects filter gives a traditional sepia “old style” effect. It is available in 3 densities, 1,2 and 3. Different colour filters can be used in combination together or with graduated colour or neutral density filters to create interesting bespoke effects. This 165mm filter is usable with Hitech 165mm holder systems or any 165mm holder. The filter is also available in 67mm, 85mm, 100mm and 150mm sizes. Hitech filters are made from the highest quality 1.5mm optical resin.