Built-In Flash - Canon EOS 55 Service Manual

Part 2: Technical Information
1.5 Built-in Flash
1) Overview
The built-in flash's pop-up operation is driven by the motor. (The flash is retracted man-
ually.) Three-zone ITL auto flash exposure control, red-eye reduction, and other basic
features are the same as with previous EOS cameras.
Table 2-7 shows the built-in flash's recycling and pop-up timing.
Table 2-7 Built-in flash recycling and pop-up timing.
Exposure Mode Recycling Pop-Up
Retraction
Creative Zone a. After flash button is pressed. When flash button is
b. After the flash fires pressed.
Full Auto a. When the exposure mode is After recycling, AF, and By hand.
Portrait set. metering are complet-
Close-up b. Halfway pressing of shutter ed, automatic pop-up
button when low-light or backlit
c. After the flash fires.
condition is detected.
2) Built-in Flash Optical System
To maintain compactness, it is almost
identical to the EOS 500/Rebel X's built-
in flash.
Pop-up/down Spring
3) Red-Eye Reduction
A lamp is used for red-eye reduction. The
lamp operates in the same way as the
EOS 5/A2E's except that shutter release
is given priority. The shutter can be
released even while the lamp is lit.
Poplup /
Switch
Flash Cam Gear
Flash Pop-up
Cam
Flash Switch Cam
Fig. 2-15 Flash Pop-up
2-16
Reflector