Cokin P153 Grey ND 4X Full P-Series Filter

The Cokin Neutral Grey ND4 filter reduces the amount of light reaching the film without affecting the colour balance. It enables slow shutter speeds to record movement in subjects such as waterfalls, clouds, or cars. This filter decreases depth of field by allowing wider apertures to be used which helps separate subjects from their background. It also decreases the effective ISO of high speed film of above ISO 400 and allows it to be used outdoors in bright situations.