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Incident-Light Illumination
(in footcandles)
(Frame rate: 24 frames/sec–approx1/50 sec)
NOTE: Data applies to both color and black-and-white films.
Exp Index Lens Opening
(Daylight
or Tungsten) f/1.4 f/2 f/2.8 f/4 f/5.6 f/8 f/11
12 200 400 800 1600 3200 6400 13000
16 160 320 640 1250 2500 5000 10000
20 125 250 500 1000 2000 4000 8000
25 100 200 400 800 1600 3200 6400
32 80 160 320 640 1250 2500 5000
40 64 125 250 500 1000 2000 4000
50 50 100 200 400 800 1600 3200
64 40 80 160 320 640 1250 2500
80 32 64 125 250 500 1000 2000
100 25 50 100 200 400 800 1600
125 20 40 80 160 320 640 1250
160 15 32 64 125 250 500 1000
200 12 25 50 100 200 400 800
250 10 20 40 80 160 320 640
320 8 15 32 64 125 250 500
400 6 12 25 50 100 200 400
500 5 10 20 40 80 160 320
640 4 8 15 32 64 125 250
800 3 6 12 25 50 100 200
1000 * 5 10 20 40 80 160
1250 * 4 8 15 32 64 125
1600 * 3 6 12 25 50 100
2000 * * 5 10 20 40 80
*Less than 3 footcandles
MPF-44 9/98
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