The Tiffen 4 x 4" WW IRND 0.6 Polariser enhances colour and contrast by eliminating reflections and hot spots on faces and improves detail, definition and colour saturation. Tiffen has combined innovative IR technology with its linear polarising filter to create the new IRND + Pola and IR + Pola filters.nnn- 3 filters in one, reducing multiple surfaces and potential reflections from stacked filtersn- Designed for digital cameras with CMOS and CCD sensors having increased sensitivity to the Red channeln- Absorbs pollution in the far red (visible), near infrared and far red wavelengthsn- The IR absorbing component is proportional to the ND valuen- Eliminates unwanted reflections from non-metallic surfaces such as water or glassn- Saturates colours by providing better contrast without affecting overall colour balancen- Eliminates ultraviolet rays to suppress haze when shooting outdoorsn- Ideal for lightweight or clip-on matte boxesnnnSpecificationsnn