Nikon D800E - Page 211

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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 11162232——0.6–1.52ft 0in.–4ft 11in.
11 16 22 32 — — — 0.6–1.1 2ft 0in.– 3ft 7in.
162232————0.6–0.82ft 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
2.83.5 4 5 5.67.1 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.