Nikon F4S - Standard TTL Flash

Standard TTL Flash
in this mode, although exposure for the background is metered
by each metering system, flash output level is not determined
automatically. However, you can manually select flash output
compensation (on the SB-24) at levels from +1 to -3 EV, for
greater personal creativity.
eThe usable film speed for TTL flash photography is ISO
25-1000; for non-TTL flash photography, it is 6-6400.
eFor details on speedlight operation, see the speedlight
instruction manual.
eUse Nikon Speedlights. Other units may damage the
camera's electrical circuit due to incompatible voltage
requirements, electric contact alignment or switch
phase.
eWhen using a special speedlight with a time-lag provi-
sion or when using a speediight with a long flash du-
ration (i.e., Medical-Nikkor 120mm f/4), adjust shutter
speed down to 1/ 125 sec. or slower.
eWhen using a speediight that does not allow automatic
sync speed setting, set the camera’s exposure mode
to Manual.