Flash Shooting Distance Range - Nikon N55 Instruction Manual

• Flash shooting distance range
Flash shooting distance for the built-in Speedlight changes according to the
film speed in use and aperture setting.
ISO film speed
25 50
100
200 400 800
Flash shooting
distance range
Guide number (m/ft.) 6/20 8.5/28 12/40 17/56 24/79 34/12, (m/ft.)
- -
1.4 2 2.8 4
2-8.5/6.6-28
-
1.4 2 2.8 4 5.6
1.4-6/4.6-20
1.4 2 2.8 4 5.6
8
1-4.2/3.3-14
Aperture value
2
2.8 4 5.6
8
11
0.7-3/2.3-9.8
2.8 4 5.6
8
11 16
0.6-2.1/2.0-6.9
4 5.6 8 11 16 22 0.6-1.5/2.0-4.9
5.6 8 11 16 22 32 0.6-1 .1/2.0-3.6
8 11 16 22 32
-
0.6-0.8/2.0-2.6
• The maximum flash shooting distance can also be calculated by dividing the guide
number by the selected aperture value.
Example: When f/2.8 is selected with ISO 100 film using the camera's built-in
Speedlight, the maximum flash shooting distance will be:
12/2.8 = approx. 4.2m or 40/2.8 = approx. 14
ft .
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