Nikon D610 User Manual page 173

A
Aperture, Sensitivity, and Flash Range
Flash range varies with sensitivity (ISO equivalency) and aperture.
Aperture at ISO equivalent of
100 200 400
1.4 2 2.8
2 2.8 4
2.8 4 5.6
4 5.6 8
5.6 8 11
8 11 16
11 16 22
16 22 32
The built-in flash has a minimum range of 0.6 m (2 ft).
In mode P, the maximum aperture (minimum f-number) is limited according to ISO
sensitivity, as shown below:
100 200
2.8 3.5
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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See Also
See page 149 for information on locking flash value (FV) for a metered subject before
recomposing a photograph.
For information on auto FP high-speed sync and choosing a flash sync speed, see Custom
Setting e1 (Flash sync speed, 0 234). For information on choosing the slowest shutter
speed available when using the flash, see Custom Setting e2 (Flash shutter speed, 0 235).
For information on flash control and using the built-in flash in commander mode, see
Custom Setting e3 (Flash cntrl for built-in flash, 0 236).
See page 292 for information on using optional flash units.
800 1600 3200 6400
4 5.6 8
5.6 8 11
8 11 16
11 16 22
16 22 32
22 32 —
32 — —
— — —
Maximum aperture at ISO equivalent of:
400 800
4
m
11 0.7–8.5
16 0.6–6.0
22 0.6–4.2
32 0.6–3.0
— 0.6–2.1
— 0.6–1.5
— 0.6–1.1
— 0.6–0.8
1600
5 5.6
Range
ft
2ft 4in.–27ft 11in.
2ft–19ft 8in.
2ft–13ft 9in.
2ft–9ft 10in.
2ft–6ft 11in.
2ft–4ft 11in.
2ft–3ft 7in.
2ft–2ft 7in.
3200 6400
7.1 8
l
147