Nikon F4 User Manual

Page 133

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•The usable film speed for TTL flash photography is ISO

25-1000; for non-TTL flash photography, it is 6-6400.

• For details on speedlight operation, see the speedlight

instruction manual.

• Use Nikon Speedlights. Other units may damage the

camera's electrical circuit due to incompatible voltage

requirements, electric contact alignment or switch


•When using a special speedlight with a time-lag provi­

sion or when using a speedlight with a long flash du­

ration (i.e., Medical-Nikkor 120mm f/4), adjust shutter

speed down to 1/125 sec. or slower.

•When using a speedlight that does not allow automatic

sync speed setting, set the camera’s exposure mode

to Manual.



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