Nikon F4 User Manual
Page 129
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With Manual (M), you control both aperture and shutter speed
while the flash exposure is determined by scene brightness
and contrast, with Matrix Balanced Fill-Flash control throughout.
• Although the slowest possible shutter speed for front-curtain
sync flash photography in TTL mode, with camera at P
h
, P or
A, is only 1/60 second, with rear-curtain sync flash photogra
phy, the shutter will operate as slowly as 30 seconds,
depending on the background brightness.
• In the S and M modes, when you select a shutter speed
faster than 1/250 sec., then turn the flash unit ON, the F4
automatically shifts to 1/250 sec.
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