Canon EOS 50 E - Page 22

8-2 Camera back:
8-3 Flash contacts:
8-4 Auto flash operation:
Part 1: General Information
Opened with the back cover latch. Not detachable. Film
window provided. No film memo holder.
X-sync. Direct contacts on accessory shoe. Speedlite
locking pin hole provided.
In the Program AE mode:
( 1) With Speedlite 380 EX
1) During normal use: When the Speedlite is ready,
the sync speed (1/60 to 1/125 sec.) is set automat-
ically and the aperture is set automatically accord-
ing to the camera's E-TTL program. When the
shutter button is pressed completely, the flash fires
a preflash of a certain output immediately before
the mirror flips up. The AE sensor reads the back-
ground light before the preflash and the light
reflected off the subject during the preflash. The
output of the main flash is then determined
according to the difference of the two light read-
ings. The main flash then fires. If the 380EX's
high sync speed (FP flash) switch is on and the
light level is too bright for the smallest aperture,
the high sync speed mode will be set automatically,
enabling synchronization with all shutter speeds.
(When the high sync speed is set, "H'' will be dis-
played in the viewfinder.) Automatic fill-in flash is
possible.
2) During FE lock: When the 380 EX is attached, the
AE lock button becomes an FE lock button.
Pressing the AE lock button fires a preflash. The
AE sensor (partial metering) then reads the light
reflected off the subject. The flash output is deter-
mined and retained in memory. When the shutter
button is pressed halfway or completely, the flash
is controlled according to the flash output retained
in memory. (FE lock will be disabled if Custom
Function No. F-4 is set to 1 or 2.)
If the 380EX's high sync speed (FP flash) switch is
on and the light level is too bright for the smallest
aperture, the high sync speed mode will be set
automatically, enabling synchronization with all
shutter speeds. (When the high sync speed is set,
"H" will be displayed in the viewfinder.)
Insufficient-flash warning provided (The FF symbol
blinks at 2 Hz if the flash output is insufficient by a
half or more stops for a proper exposure.)
Automatic fill-in flash is possible.
(2) With the built-in flash and TTL auto flash metering
When the Speedlite is ready, the sync speed (1/60 to
1/ 125 sec.) is set automatically and the aperture is
set automatically according to the camera's TTL pro-
gram. TTL off-the-film auto flash control with 3-zone
flash metering linked to focusing point. Automatic
fill-in flash is possible.
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