Neutral Density FiltersnThese filters reduce the amount of light passing through the camera lens without altering the colour of the scene. They are particularly useful in bright conditions to help prevent overexposure. Neutral density filters also allow proper exposure at a wider lens aperture to reduce depth of field to highlight a key subject by making the foreground and/or background out of focus.nnn- Eliminates overly bright, washed out imagesn- Balances exposuren- Controls depth of fieldn- Allows slower shutter speeds to produce blurred motion effects