AF160FC.book Page 33 Monday, November 17, 2008 10:43 AM

Manual flash guidelines and calculation methods

Subject distance guideline

Unit: m

ISO

mode

GN

F2.8

 

F4

 

F5.6

F8

 

F11

 

F16

F22

F32

F45

 

 

FULL

16.0

 

5.7

 

4.0

2.8

 

2.0

 

1.4

1.0

0.71

0.50

0.35

 

100

1/4

8.0

 

2.8

 

2.0

1.4

 

1.0

 

0.71

0.50

0.35

0.25

0.18

 

 

1/16

4.0

 

1.4

 

1.0

0.71

 

0.50

 

0.35

0.25

0.18

0.13

0.09

 

 

FULL

22.6

 

8.0

 

5.7

4.0

 

2.8

 

2.0

1.4

1.0

0.71

0.50

 

200

1/4

11.3

 

4.0

 

2.8

2.0

 

1.4

 

1.0

0.71

0.50

0.35

0.25

 

 

1/16

5.7

 

2.0

 

1.4

1.0

 

0.71

 

0.50

0.35

0.25

0.18

0.13

 

 

FULL

32.0

 

11

 

8.0

5.7

 

4.0

 

2.8

2.0

1.4

1.0

0.71

 

400

1/4

16.0

 

5.7

 

4.0

2.8

 

2.0

 

1.4

1.0

0.71

0.50

0.35

 

 

1/16

8.0

 

2.8

 

2.0

1.4

 

1.0

 

0.71

0.50

0.35

0.25

0.18

 

 

FULL

45.3

 

16

 

11

8.0

 

5.7

 

4.0

2.8

2.0

1.4

1.0

4

800

1/4

22.6

 

8.0

 

5.7

4.0

 

2.8

 

2.0

1.4

1.0

0.71

0.50

 

 

1/16

11.3

 

4.0

 

2.8

2.0

 

1.4

 

1.0

0.71

0.50

0.35

0.25

 

 

FULL

64.0

 

23

 

16

11

 

8.0

 

5.7

4.0

2.8

2.0

1.4

 

1600

1/4

32.0

 

11

 

8.0

5.7

 

4.0

 

2.8

2.0

1.4

1.0

0.71

 

 

1/16

16.0

 

5.7

 

4.0

2.8

 

2.0

 

1.4

1.0

0.71

0.50

0.35

 

 

FULL

90.5

 

32

 

23

16

 

11

 

8.0

5.7

4.0

2.8

2.0

 

3200

1/4

45.3

 

16

 

11

8.0

 

5.7

 

4.0

2.8

2.0

1.4

1.0

 

 

1/16

22.6

 

8.0

 

5.7

4.0

 

2.8

 

2.0

1.4

1.0

0.71

0.50

 

 

FULL

128.0

 

45

 

32

23

 

16

 

11

8.0

5.7

4.0

2.8

 

6400

1/4

64.0

 

23

 

16

11

 

8.0

 

5.7

4.0

2.8

2.0

1.4

 

 

1/16

32.0

 

11

 

8.0

5.7

 

4.0

 

2.8

2.0

1.4

1.0

0.71

 

How to use the flash guidelines

You can determine the distance from the ISO sensitivity, the flash mode dial setting (FULL, 1/4, 1/16), and the aperture settings.

Example: If the ISO sensitivity = 200, the mode dial setting = 1/4, and the aperture = F11, then the distance is about 1.0 m. (Exposure = 1x) You can also determine a combination of aperture, mode dial setting, and ISO sensitivity by figuring backwards from the distance.

*The values in the guideline are for 1x exposure. The exposure for taking photos varies depending on the subject and shooting conditions. We recommend taking test shots to check the exposure for the shot. (Try opening the aperture and increasing the exposure.)

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