Kodak DCS Pro 14n User Manual
Page 155
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Flash Photography
April 29, 2004
10-5
Flash Shooting Distance
Range for the Built-in
Speedlight
The flash shooting distance range varies, depending on ISO and aperture.
ISO
100
200
400
800
Flash shooting
distance range (m)
Guide number
12
17
24
34
Aperture value
1.4
2
2.8
4
2 - 8.5
2
2.8
4
5.6
1.4 - 6
2.8
4
5.6
8
1 - 4.2
4
5.6
8
11
0.7 - 3
5.6
8
11
16
0.6 - 2.1
8
11
16
22
0.6 - 1.5
11
16
22
32
0.6 - 1.1
16
22
32
—
0.6 - 0.8
You can also calculate the maximum flash shooting distance by dividing
the guide number by the aperture value.
For example, with an aperture of f/2.8 and an ISO of 100, the maximum
flash shooting distance will be 12 / 2.8 = approximately 4.2 m.
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