This is a personal set of filters collected for various effects such as sunset, sunrise, seascapes, waving grass grain, and more. The filters all revolve so you can set them as you need. This is a terrific starter set for someone looking to advance their work and wants to put the effect in the shit not try to apply various post-production effects which just do not look the same. I have moved to 77mm and 82mm and no longer need this set.