Tiffen 4 x 4″ Neutral Density 1.0 Filter

The Tiffen 4 x 4″ ND 1.0 Filter is a solid neutral density filter providing a 3.3 stop exposure reduction. When placed over the lens, this 1.0 optical density darkens the scene by a factor of 1/10. For example, an ITI LED lightbox minimum setting will be reduced from 30 to 3 lux, or the low-light version will be reduced from 1 lux to 0.1 lux..