The Cokin Rainspot filter is a clear center spot diffusion filter that surrounds the subject with the impression of heavy rain. The filter effect is directly influenced by the f-stop and the focal length. The transformation is softer with wider apertures. The size of the clear circular area increases relatively with the selection of longer focal lengths. The exposure determination should be done without the filter.
This filter measures 85 x 85mm and fits the Cokin P series holder.