The Cokin P154 filter reduces the amount of light through the lens through the lens by three aperture divisions and extends the exposure by eight times. Cokin filters are mounted with a holder (holder), which is attached to replaceable mounting adapters, with diameters that can be adapted to your lens. The P system (size M) is recommended for use with compact system cameras with interchangeable optics (mirrorless) and amateur DSLRs with APS-C matrices used with kit or long focal length lenses. It can also be used with small video cameras.