Base Exposure without Filter	Lee BigStopper 10-Stop ND Filter
1/8000	1/8
1/4000	1/4
1/2000	1/2
1/1000	1 sec
1/500	2 sec
1/250	4 sec
1/125	8 sec
1/60	15 sec
1/30	30 sec
1/15	60 sec (1 min)
1/8	120 sec (2 min)
1/4	240 sec (4 min)
1/2	480 sec (8 min)
1 sec	960 sec (16 min)
2 sec	1920 sec (32 min)
4 sec	3840 sec (1 hr)
Created for you by Ilya Genkin Photography