Nikon D70S - Manual (Page 110)

100
Taking Photographs—Flash Photography
Using the Built-in Speedlight
If the built-in Speedlight is used in continuous shooting mode, only one photograph
will be taken each time the shutter-release button is pressed.
Vibration reduction (available with VR lenses) does not take effect if the shutter-release
button is pressed halfway while the built-in Speedlight is recharging.
After the built-in Speedlight has been used for several consecutive shots, it may turn
off briefl y to protect the fl ash. The built-in Speedlight can be used again after a short
pause.
Flash Range, Aperture, and Sensitivity
Flash range varies with sensitivity (ISO equivalency) and aperture.
200
Aperture at ISO equivalent of
250 320 400 500 640 800 1000 1250 m 1600 ft
2 2.2 2.5 2.8 3.2 4 3.5 4.5 5 1.0–7.5 3´3˝–24´7˝ 5.6
2.8 3.2 3.5 4 4.5 5.6 5 6.3 7.1 0.7–5.4 2´4˝–17´8˝ 8
Range
8 9 10 11 13 14 16 18 20 22 0.6–1.9 2´–6´3˝
4 4.5 5 5.6 6.3 7.1 8 9 10 11 0.6–3.8 2´–12´6˝
5.6 6.3 7.1 8 9 10 11 13 14 16 0.6–2.7 2´–8´9˝
11 13 14 16 18 20 22 25 29 32 0.6–1.4 2´–4´7˝
16 18 20 22 25 29 32 — — — 0.6–0.9 2´–2´11˝
22 25 29 32 — — — — — — 0.6–0.7 2´–2´4˝
The minimum distance at which the built-in Speedlight can be used is 0.6 m (2´).
In P, , , , and modes, the maximum aperture (minimum f/-number) is limited
according to sensitivity (ISO equivalency) as shown below:
Maximum aperture at ISO equivalent of
250
3
6
Mode
P, , ,
320
3.2
6.3
400
3.3
6.7
500
3.5
7.1
640
3.8
7.6
800
4
8
1000
4.2
8.5
1250
4.5
9
1600
4.8
9.5
200
2.8
5.6
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 that listed
above, the maximum value for aperture is the maximum aperture of the lens.
i-TTL fl ash control is available at all sensitivity (ISO equivalency) settings.