Tiffen 127mm 4 Point/2mm Grid Star Effect Glass Filter

The Tiffen 127mm 4 Point/2mm Grid Star Effect Glass Filter is a cross screen filter providing 4 reflected light points stemming from specular highlights within the image frame. When the filter is rotated in front of the lens, the points shift in direction but always reflect symmetrically north-south, east-west. This effect is caused by thinly etched lines on one of the planes of the filter. These etched lines are spaced 2mm apart, producing visual depth and separation between light points in the resulting image. Star effect filters are most effective when not used in combination with other filters.