Cokin A057 Star Effect (4 Point) Resin Filter

My 4 star filter works perfectly. The one I own is made by Cokin and the unit has #1 a screw on adapter ring into the filter side of the lens. #2 then you slide on to the ring a filter holder adapter. #3 the next part is your choice gel filters, graduated or 1/2 and 1/2 lined filters or entire solid color filter. Cokin make all variations of screw on filters but the difference is slide filter allow for custom. Top half polarized and bottom half green graduated to help with the greens and plants. the star filters come 4/6/8 stars but the 6 and the 8 I found to bright without stopping down or with a ND2 to slow the process down