Schneider 4X5.65 and .3 Filter
Schneider Optics 4x5.65 inch Neutral Density (ND) .3 Filter (p/n 68-040356). This is a Neutral Density Filter used for Cinematography. It has a Neutral Density of 0.3 (1 stop) and therefore reduces transmission by 50%. A common use for this filter is to allow the use of larger apertures, reducing depth of field, to allow selective focus and rack focus.