Lee neutral density 09 polyester filter
These nd filters reduce light transmission uniformly over the visible region of the spectrum in definitive steps they are used mainly in colour photography for reducing light levels without colour change and can also be used for black and white photography they are particularly useful for compensating for too much light in circumstances where changing the shutter speed aperture or film type is not possible or desirable lee neutral density 09 polyester filter reduces the light by 3 stops