Nikon D70S - Manual (Page 199)

189
Technical Notes—Optional Accessories
Notes on Optional Speedlights
Refer to the Speedlight manual for detailed instructions. If the Speedlight supports the
Creative Lighting System, refer to the section on CLS-compatible digital SLR cameras.
The D70S is not included in the “digital SLR” category in the SB-80DX, SB-28DX, and
SB-50DX manuals.
The shutter will synchronize with an external fl ash at speeds of 1 /
500
s or slower.
i-TTL and Auto Aperture (AA) fl ash control are available only with CPU lenses. Select-
ing spot metering while an SB-800 or SB-600 Speedlight is attached activates standard
i-TTL Flash for Digital SLR.
i-TTL fl ash control is available at all sensitivity (ISO equivalency) settings. If the fl ash-
ready indicator blinks for about three seconds after a photograph is taken with i-TTL
fl ash control, the photograph may be underexposed.
When an SB-800 or SB-600 is mounted on the camera, AF-assist illumination and red-
eye reduction are performed by the optional Speedlight. With other Speedlights, AF-
assist illumination is performed using the AF-assist illuminator on the camera (
72).
Auto power zoom is available only with SB-800 and SB-600 Speedlights.
In P, , , , , , , and modes, the maximum aperture (minimum f/-number)
is limited according to sensitivity (ISO equivalency) as shown below:
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.
When an SC-series 17, 28, or 29 sync cable is used for off-camera fl ash photography,
correct exposure may not be achieved using i-TTL Balanced Fill-Flash for Digital SLR.
We recommend that you choose spot metering to select Standard i-TTL Flash for Digi-
tal SLR. Take a test shot and view the results in the monitor.
In i-TTL mode, use the fl ash panel provided with your Speedlight. Do not use other
panels such as diffusion panels, as this may produce incorrect exposure.
Maximum aperture at ISO equivalent of
250
4.2
8.5
Mode
P, , , , , ,
320
4.5
9
400
4.8
9.5
500
5
10
640
5.3
11
800
5.6
11
1000
6
12
1250
6.3
13
1600
6.7
13
200
4
8