Calumet 77mm ND4x SMC Ultra Slim Filter

The Calumet ND4x SMC Ultra Slim Filter reduces incoming light by 2 stops, extending exposure time and allowing wider apertures in bright conditions. Built with Japanese AGC glass and 28 multilayer coatings, it maintains neutral colour reproduction while resisting flare, water, grease and scratches. A slim 3.3mm aluminium frame with front threading supports filter stacking with minimal risk of vignetting.