Nikon Autofocus Speedlight SB-24 - Manual (Page 19)

READY-LIGHT WARNING FUNCTIONS
The ready-light in the camera viewfinder blinks in the cases
listed below. When blinking occurs, check the SB-24's flash
mode selector setting, camera's shutter speed/mode selector
setting and/or film speed setting and adjust as necessary.
The ready-light will blink before shooting:
• When SB-24's flash mode selector is at TTL with cameras
other than Nikon F4, F-801/N8008, F-501/N2020,
F-401S/N4004S, F-301/N2000, FA, FE2, or FG. Reset SB-24's
flash mode selector to A or M.
• When using the FA, FE2, or FG to perform TTL auto flash with
the camera’s shutter speed dial at a mechanical setting (M250,
M90 or B). Reset to another shutter speed setting. To use
M250, M90 or B, reset SB-24's flash mode selector to A or M.
• When performing programmed TTL auto or TTL auto flash
operation with a camera film speed setting beyond the usable
range. Use film within the appropriate TTL auto flash photog­
raphy range (ISO 25-1000 with F-501/N2020 or F-301/N2000;
ISO 25-400 with F-401S/N4004S, FA, FE2 or FG). With the
FA, the ready-light also blinks when the camera’s film speed
setting approaches ISO 12.
• When the shutter speed of the FE or FM2 is not within the
flash sync speed range. Set the shutter speed to the flash
sync speed or slower.
• With Nikon F-401S/N4004S, when the SB-24 and built-in flash
are turned off, and the camera’s computer recommends flash
use.