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.
