PRO1D R-Twinkle Star (W) 77mm Thin Frame Type This filter makes point light sources like nightscapes and illuminations sparkle with a cross effect, like stars. It's characterized by not producing overly long light rays. ● Thin frame type compatible with wide-angle lenses. Features knurling for easy attachment and removal. ● The softer filter-like effect becomes more apparent as the lens's focal length becomes telephoto.