ND8 filter to fit Cokin P system.

The main purpose of using neutral density (i.e., ND) filters is to reduce the amount of light that can pass through the lens. As a result, if a shutter speed is kept the same, after adding a neutral density filter, a larger aperture must be used to obtain the same exposure. Similarly, if an aperture is kept the same, after adding a neutral density filter, a slower shutter speed must be used to obtain the same exposure.

ND filters help us in at least three situations: (1) reduce the intensity of light; (2) use slower shutter speed; and (3) use larger aperture.

All ND filters are gray in color. The deeper the color, the stronger the effect (i.e., reducing more light).

They are named ND2, ND4, ND8 to indicate reducing 1 , 2, or 3 stops .

This ND8 filter reduces the light by 3 stops. An ND4 filter reduces light by 2 stops An ND2 filter reduces light by 1 stop.

Similar optical characteristics and quality to Cokin. The only difference seems to be that the edges of the filters are not as well finished as the original Cokin filters. Case is similar.

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