Owner's Manual

210 Optional Flash Units
Depending on the lens used and scene recorded, the in-focus indicator
(I) may be displayed when the subject is not in focus, or the camera
may be unable to focus and the shutter release will be disabled.
In mode P, 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 12800
4 4.8 5.6 6.7 8 9.5 11 13
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.
Noise in the form of lines may appear in flash photographs taken with
an SD-9 or SD-8A high-performance battery pack attached directly to
the camera. Reduce ISO sensitivity or increase the distance between
the camera and the power pack.
A The AS-15 Sync Terminal Adapter
When the AS-15 sync terminal adapter (available separately) is
mounted on the camera accessory shoe, flash accessories can be
connected via a sync terminal.
D Use Only Nikon Flash Accessories
Use only Nikon flash units. Negative voltages or voltages over 250 V
applied to the accessory shoe could not only prevent normal
operation, but damage the sync circuitry of the camera or flash. Before
using a Nikon flash unit not listed in this section, contact a Nikon-
authorized service representative for more information.