The Cokin P Series Filter system is suitable for larger diameter lenses up to 82mm & is recommended for focal lengths from 28mm onwards (35mm format). It features a wide range of adaptor rings, including dedicated Hasselbad® B50/B60/B70, Rollei® VI as well as a Universal Ring & numerous dedicated accessories. This extra slim holder helps to eliminate vignetting down to 20mm focal length (35mm format) & allows the use of filters with super wide lenses.