Warning Indications On The Camera - Nikon Autofocus Speedlight SB-27 Instruction Manual

Warning indications on the camera

The flash ready-light in the camera's viewfinder blinks in the
following cases. (No indication appears in the SB-27's LCD
panel.)
S
F90X/N90s viewfinder display shown
F-501/N2020, F-401s/N4004s, F-401/N4004, F-301/N2000, FA,
FE2, FG, and Nikonos V
In TTL mode, the flash ready-light blinks to indicate that the ISO
film speed of the film in use is higher than the ISO setting in the
SB-27's LCD panel, (or lower also in the case of the FA camera).
FA, FE2, FG, and Nikonos V
In TTL mode, the flash ready-light blinks when the shutter speed
is set to either M90, M250, or B setting.
FM3 , New FM2
A
The flash ready-light blinks when the shutter speed set is faster
than the flash sync speed.
Any camera having an accessory shoe capable of TTL Auto
Flash operation
The flash ready-light blinks when the shutter release button is
pressed halfway, indicating that the SB-27 has not been securely
mounted on the camera.
F90X/N90s, F90-Series/N90, F70-Series/N70, F65-Series/
N65-Series, F60-Series/N60, F50-Series/N50, F-601/N6006,
F-601 /N6000, F-401x/N5005, F-401s/N4004s, and
M
F-401/N4004
The flash ready-light (or flash recommended/ready light) blinks
or lights up (in some camera models) to recommend the use of
flash.
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