Incident Key Light/T-stop


Find T-stop from footcandles or footcandles for T-stop (at 24fps, 180 degree shutter)
EI/ASA: 1600 1250 1000 800 650 500 400 320 250 200 160 125 100 80 64 50 40 32 25
T-Stop: Footcandles
1.4 1.5 2.0 2.5 3.0 4.0 5.0 6.0 8.0 10 12 16 20 25 32 40 50 64 80 100
1.6 2.0 2.5 3.0 4.0 5.0 6.0 8.0 10 12 16 20 25 32 40 50 64 80 100 125
1.8 2.5 3.0 4.0 5.0 6.0 8.0 10 12 16 20 25 32 40 50 64 80 100 125 160
2.0 3.0 4.0 5.0 6.0 8.0 10 12 16 20 25 32 40 50 64 80 100 125 160 200
2.2 4.0 5.0 6.0 8.0 10 12 16 20 25 32 40 50 64 80 100 125 160 200 250
2.5 5.0 6.0 8.0 10 12 16 20 25 32 40 50 64 80 100 125 160 200 250 320
2.8 6.0 8.0 10 12 16 20 25 32 40 50 64 80 100 125 160 200 250 320 400
3.2 8.0 10 12 16 20 25 32 40 50 64 80 100 125 160 200 250 320 400 500
3.6 10 12 16 20 25 32 40 50 64 80 100 125 160 200 250 320 400 500 650
4.0 12 16 20 25 32 40 50 64 80 100 125 160 200 250 320 400 500 650 800
4.5 16 20 25 32 40 50 64 80 100 125 160 200 250 320 400 500 650 800 1000
5.0 20 25 32 40 50 64 80 100 125 160 200 250 320 400 500 650 800 1000 1290
5.6 25 32 40 50 64 80 100 125 160 200 250 320 400 500 650 800 1000 1290 1625
6.3 32 40 50 64 80 100 125 160 200 250 320 400 500 650 800 1000 1290 1625 2050
7.1 40 50 64 80 100 125 160 200 250 320 400 500 650 800 1000 1290 1625 2050 2580
8.0 50 64 80 100 125 160 200 250 320 400 500 650 800 1000 1290 1625 2050 2580 3250
9.0 64 80 100 125 160 200 250 320 400 500 650 800 1000 1290 1625 2050 2580 3250 4100
10.0 80 100 125 160 200 250 320 400 500 650 800 1000 1290 1625 2050 2580 3250 4100 5160
11.3 100 125 160 200 250 320 400 500 650 800 1000 1290 1625 2050 2580 3250 4100 5160 6500
12.7 125 160 200 250 320 400 500 650 800 1000 1290 1625 2050 2580 3250 4100 5160 6500 8200
14.2 160 200 250 320 400 500 650 800 1000 1290 1625 2050 2580 3250 4100 5160 6500 8200
16.0 200 250 320 400 500 650 800 1000 1290 1625 2050 2580 3250 4100 5160 6500 8200
18.0 250 320 400 500 650 800 1000 1290 1625 2050 2580 3250 4100 5160 6500 8200
20.0 320 400 500 650 800 1000 1290 1625 2050 2580 3250 4100 5160 6500 8200
22.6 400 500 650 800 1000 1290 1625 2050 2580 3250 4100 5160 6500 8200