Cokin P153 Grey ND4X Filter

Without altering colours, the Cokin P153 NDX4 Neutral Density Filter corresponds to a loss of light equivalent to two stops, allowing you to gain the 2 apertures you need to allow you to play with backgrounds, distance and depth of field, or to use a slower shutter speed you need to give an impression of motion.

Price: 22.99 from Wex Photo Video