These three filters adjust exposure without affecting colour balance and can be used with all standard film types.• Exposure can be increased by 1, 2 or 3 stops to suit individual requirements.
Lee Filters Lee NDGSET 4 x 6 Graduated Neutral Density Resin Filter Features
0.3 ND reduces light 1 stop.
0.6 ND reduces light 2 stops.
0.9 ND reduces light 3 stops.
LEE Filters SET-RESIN-NDG Specs