Pairing infrared attenuation with solid neutral density, the 138mm round Water White Glass IRND Filter from Tiffen is a versatile solution to reduce exposure values and achieve neutral color. The neutral density portion of the filter offers a 1-stop exposure reduction for working with longer shutter speeds or wider aperture settings. The infrared portion attenuates infrared wavelengths above 700nm to benefit working with CCD and CMOS sensors under difficult lighting conditions where infrared pollution can affect color balance. This infrared design also works proportionately to the density value, allowing you to achieve comparably neutral results from density to density in varying lighting conditions. The filter is constructed from Water White optical glass and utilizes Tiffen ColorCore technology for maintained clarity and quality. It measures 138mm in diameter and is suitable for use in select matte boxes and sunshades.