The Schneider Neutral Density 4×5.65 Filter Set includes 4 x filters that reduce exposure values without affecting color balance. These filters allow shooters to choose slow shutter speeds for artistic effect even in bright light or with high ISO values. The set includes 4 x different strengths to control the level of exposure reduction. These filters are compatible with matte boxes designed to hold loose, rectangular filters in the 4×5.65 size.