The Lee Filters LEE85 ND0.6 Grad Medium comes as part of three LEE medium neutral density filters: 0.3 - 1 Stop, 0.6 - 2 Stop and 0.9 - 3 Stop. They are formulated with harder than usual grad lines which compensate for smaller sensor sizes. These filters have a medium-dark to light transition which allows selective adjustment of exposure across the frame without affecting colour balance. These filters are best suited to scenes where harsh light between foreground and sky can affect exposure levels and therefore detail. Some examples of where to use these filters would be on rooftops or peaks of mountains or sea-sky horizons. Placing the darker Neutral Density half of the filter onto the sky in the frame will reduce the sky exposure this enabling cloud detail to be kept correctly exposed and avoids thewhite-out' effect caused by exposing for the foreground.