Nikon D800 User Manual (en)

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En_03
187
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
100
200
400
800
1600
3200
6400
m
ft
1.4
2
2.8
4
5.6
8
11
0.7–8.5
2ft 4in.–27ft 11in.
2
2.8
4
5.6
8
11
16
0.6–6.0
2ft 0in.–19ft  8in.
2.8
4
5.6
8
11
16
22
0.6–4.2
2ft 0in.–13ft  9in.
4
5.6
8
11
16
22
32
0.6–3.0
2ft 0in.– 9ft 10in.
5.6
8
11
16
22
32
0.6–2.1
2ft 0in.– 6ft 11in.
8
11
16
22
32
0.6–1.5
2ft  0in.– 4ft  11in.
11
16
22
32
0.6–1.1
2ft 0in.– 3ft  7in.
16
22
32
0.6–0.8
2ft  0in.– 2ft  7in.
The built-in flash has a minimum range of 0.6 m (2 ft).
In exposure mode e, the maximum aperture (minimum f-number) is 
limited according to ISO sensitivity, as shown below:
Maximum aperture at ISO equivalent of:
100
200
400
800
1600
3200
6400
2.8
3.5
4
5
5.6
7.1
8
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.