Nikon 25214 D70 User's Guide - Page 110

Using the Built-in Speedlight, Flash Range, Aperture, and Sensitivity, Aperture at ISO equivalent

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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 briefly to protect the flash. 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. Aperture at ISO equivalent of Range 200 250 320 400 500 640 800 1000 1250 1600 m ft 2 2.2 2.5 2.8 3.2 3.5 4 4.5 5 5.6 1.0-7.7 3´3˝-25´3˝ 2.8 3.2 3.5 4 4.5 5 5.6 6.3 7.1 8 0.7-5.5 2´4˝-18´1˝ 4 4.5 5 5.6 6.3 7.1 8 9 10 11 0.6-4.0 2´-13´1˝ 5.6 6.3 7.1 8 9 10 11 13 14 16 0.6-3.8 2´-12´6˝ 8 9 10 11 13 14 16 18 20 22 0.6-1.9 2´-6´3˝ 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: Mode P, , , Maximum aperture at ISO equivalent of 200 250 320 400 500 640 800 1000 1250 1600 2.8 3 3.2 3.3 3.5 3.8 4 4.2 4.5 4.8 5.6 6 6.3 6.7 7.1 7.6 8 8.5 9 9.5 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 flash control is available at all sensitivity (ISO equivalency) settings. 100

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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 briefly to protect the flash.
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
1.0–7.7
3´3˝–25´3˝
5.6
2.8
3.2
3.5
4
4.5
5.6
5
6.3
7.1
0.7–5.5
2´4˝–18´1˝
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
0.6–4.0
2´–13´1˝
5.6
6.3
7.1
8
9
10
11
13
14
16
0.6–3.8
2´–12´6˝
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 flash control is available at all sensitivity (ISO equivalency) settings.