This filter combines a solid variable neutral density element with a circular polarizer element. The variable neutral density element provides an exposure reduction of 1.5 to 10 stops. Its 0.45 to 3.0 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed than would normally be required. Features: * Japan-imported AGC glass
* Double-sided 12 layers coating
* 99% light transmittance
* Super slim and delicate design Model Number: MU37 Size: 37mm Material: Ring: 6063 aluminium alloy Filter: AGC glass Length: 72mm Height: 14mm Width: 87mm