H & Y RevoRing Variable ND3-ND1000 and CPL Filter with 37-49mm Variable Adapter

The RevoRing Variable ND + CPL combination has the benefit of being an essential tool for shooting both videos and stills. Once you have attached the RevoRing to your lens, you have a wealth of dynamic range at your fingertips, with the added bonus of a Circular Polarizer which features Japanese Nitto polarizing film - offering up to 99.9% polarizi The RevoRing Variable Neutral Density has a dynamic range of ND3 to ND1000, in photographic terms, this equates to 1.5 - 10 stops of light control! Hard Stop - The Variable Neutral Density ring will feature a hard stop at 'MAX' preventing the user from going beyond the 10 stop position on the ring Guide Pin - In addition to the Circular Polarizer inner ring, the Variable Neutral Density outer ring will also feature a guide pin, for improved control and functionality Focal Length Guide - The markers between 'Min' and 'Max' to reflect focal lengths and stops achieved using different lenses