Calumet Variable ND2-400 SMC 49 mm Ultra Slim Filter

The Calumet Variable ND2 400 SMC Ultra Slim Filter gives users more control over exposure by providing an adjustable 1 9 stop reduction without changing aperture, shutter speed, or ISO. It supports long exposures, wide aperture shooting, and controlled motion in bright light. Japanese AGC glass with Correct Colour technology keeps colour neutral, while the slim 7.4 mm frame and 28 layer coatings maintain consistent optical clarity.