Nikon Autofocus Speedlight SB-24 - Manual (Page 42)

The SB-24 is capable of several different automatic fiii-fiash
methods. The method you choose depends on the Nikon SLR
model you use, lighting conditions, subject movement and the
esthetic quaiities you wish to achieve. Carefully consider each
picture situation.
MATRIX BALANCED FILL-FLASH
This is a feature of Nikon SLR models having muiti-segment
iight meters (Matrix meter). The camera's Matrix meter reads
the scene's iight ieveis and light patterns, and signais the
computer, which then calculates the available-light exposure
settings. When the shutter is released, the camera's TTL sensor
senses available light and flash illumination, then reiays the
information to the computer, which automaticaiiy controls the
flash operation. The computer automatically determines the
appropriate amount of fiash exposure compensation to use.
When the computer senses just the right amount of fiash
iiiumination for a baianced fili-flash exposure (based on the
automatic compensation controi), the flash is turned off. The
result is a well-baianced photo with the correct exposure for
both background and foreground subjects. Ali this takes place
automatically and much quicker than it can be expiained.