By blocking 1 to 8.66 f-stops, you can use wider apertures in variable light for shallower depth of field effects, and slower shutter speeds for long exposure effects without overexposing your images. Cinematographers can use our ND2–400 Variable ND Filter to create more cinematic effects in low and bright light. For wide-angle lenses, we recommend our Variable ND2-32, ND8-128, ND64-1000 or fixed ND filters.