Nikon D300 User Manual page 431

Aperture, Sensitivity, and Flash
Ran~
The range of the built-in flash varies with sensitivity (ISO
equivalency) and aperture.
Aperture at ISO equivalent of Range
200 400 800 1600 3200
m
ft.
104 2 2.8 4 5.6 1.0-8.5 3 ft 3 in.-27ft. 11 in.
2 2.8 4
5.6 8
0.7-6.1
2ft. 4in.-20ft.
2.8 4 5.6 8 11 0.6-4.2 2 ft.-13 ft. 9in.
4 5.6 8 11 16 0.6-3.0 2ft.-9ft. lOin.
5.6 8 11 16 22 0.6-2.1 2ft.-6ft. 11 in.
8
11
16 22 32 0.6-1.5 2 ft.-4 ft. 11 in.
11
16 22 32
-
0.6-1.1
2ft -3ft. 7in.
16 22 32
-
0.6-0.8 2ft -2ft. 7in.
The built-in flash has a minimum range of 0.6 m
(2
ft.).
In programmed auto exposure mode (mode P), the maximum
aperture (minimum f-number) is limited according to ISO
sensitivity, as shown below:
Maximum aperture at ISO equivalent of:
200 400
800 1600 3200
3.5 4
5 5.6
7.1
For each one-step increase in sensitivity (e.g., from 200 to 400),
aperture is stopped down by half an f-stop. If the maximum
aperture of the lens is smaller than given above, the maximum
value for aperture will be the maximum aperture of the lens.
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