Nikon D300s User Manual
Page 200
174
l
A
Aperture, Sensitivity, and Flash Range
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.
1.4
2
2.8
4
5.6
1.0–12.0
3ft. 3in.–39ft. 4in.
2
2.8
4
5.6
8
0.7–8.5
2ft. 4in.–27ft. 11in.
2.8
4
5.6
8
11
0.6–6.1
2ft.–20ft.
4
5.6
8
11
16
0.6–4.2
2ft.–13ft. 9in.
5.6
8
11
16
22
0.6–3.0
2ft.–9ft. 10in.
8
11
16
22
32
0.6–2.1
2ft.–6ft. 11in.
11
16
22
32
—
0.6–1.5
2ft.–4ft. 11in.
16
22
32
—
—
0.6–1.1
2ft.–3ft. 7in.
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
e), 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.