AccueilND Filter Exposure Time Calculator ND Filter Exposure Time Calculator ND Filter Exposure Time Calculator Base Exposure Time: 1/250 1/125 1/60 1/30 1/15 1/8 1/4 1/2 1s 2s 4s 8s ND Filter: ND4 (2 stops) ND8 (3 stops) ND16 (4 stops) ND32 (5 stops) ND64 (6 stops) ND100 (6.64 stops) ND128 (7 stops) ND256 (8 stops) ND400 (8.64 stops) ND500 (9 stops) ND512 (9 stops) ND1000 (10 stops) Include Polarizer (1.5 stops): Calculate New Exposure Time Do you want more calculators? Here is a link to a list of photo calculators.