Incident Key Light/T-stop exposure guide

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Incident Key Light/T-stop


Find T-stop from footcandles or footcandles for T-stop at 24fps

 

EI/ASA:

1600

1250

1000

800

650

500

400

320

250

200

160

125

100

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

1.6

 

2.0

2.5

3.0

4.0

5.0

6.0

8.0

10

12

16

20

25

32

1.8

 

2.5

3.0

4.0

5.0

6.0

8.0

10

12

16

20

25

32

40

2.0

 

3.0

4.0

5.0

6.0

8.0

10

12

16

20

25

32

40

50

2.2

 

4.0

5.0

6.0

8.0

10

12

16

20

25

32

40

50

64

2.5

 

5.0

6.0

8.0

10

12

16

20

25

32

40

50

64

80

2.8

 

6.0

8.0

10

12

16

20

25

32

40

50

64

80

100

3.2

 

8.0

10

12

16

20

25

32

40

50

64

80

100

125

3.6

 

10

12

16

20

25

32

40

50

64

80

100

125

160

4.0

 

12

16

20

25

32

40

50

64

80

100

125

160

200

4.5

 

16

20

25

32

40

50

64

80

100

125

160

200

250

5.0

 

20

25

32

40

50

64

80

100

125

160

200

250

320

5.6

 

25

32

40

50

64

80

100

125

160

200

250

320

400

6.3

 

32

40

50

64

80

100

125

160

200

250

320

400

500

7.1

 

40

50

64

80

100

125

160

200

250

320

400

500

650

8.0

 

50

64

80

100

125

160

200

250

320

400

500

650

800

9.0

 

64

80

100

125

160

200

250

320

400

500

650

800

1000

10.0

 

80

100

125

160

200

250

320

400

500

650

800

1000

1290

11.3

 

100

125

160

200

250

320

400

500

650

800

1000

1290

1625

12.7

 

125

160

200

250

320

400

500

650

800

1000

1290

1625

2050

14.2

 

160

200

250

320

400

500

650

800

1000

1290

1625

2050

2580

16.0

 

200

250

320

400

500

650

800

1000

1290

1625

2050

2580

3250

18.0

 

250

320

400

500

650

800

1000

1290

1625

2050

2580

3250

4100

20.0

 

320

400

500

650

800

1000

1290

1625

2050

2580

3250

4100

5160

22.6

 

400

500

650

800

1000

1290

1625

2050

2580

3250

4100

5160

6500

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