Cokin Z-Pro Gradual Grey ND4 Medium Filter (Z121M)

Neutral density graduated filters (also known as ND grads) are clear in the bottom half with a gradual transition to the ND effect in the top half of the filter. They produce a grey tone and are used to reduce light, enabling more control over exposure and depth of field. Neutral Density graduated filters are primarily used for light reduction in skylines or landscape shots.