Canon EOS Rebel T5 18-55 IS II Kit - Manual (Page 289)

289
Troubleshooting Guide
In shooting modes ( < C > <2> <4> <6>) whose default
settings are < a > (Auto flash), the built-in flash will rise automatically
when necessary.
If you shoot continuously with the built-in flash at short intervals, the
flash may stop firing to protect the flash unit.
If you use a flash unit other than an EX-series Speedlite, the flash will
always be fired at full output (p.271).
Under [z1: Flash control], if [Flash metering mode] for [External
flash C.Fn setting] is set to [TTL], the flash will always fire at full
output (p.197).
If flash exposure compensation has already been set with the external
Speedlite, flash exposure compensation cannot be set with the
camera. When the external Speedlite’s flash exposure compensation
is canceled (set to 0), flash exposure compensation can be set with
the camera.
Under [53: Custom Functions (C.Fn)], set [3: Flash sync. speed in
Av mode] to [0: Auto] (p.259).
The built-in flash is raised by itself.
The built-in flash does not fire.
The flash always fires at full output.
I cannot set flash exposure compensation when
using an external Speedlite.
High-speed sync cannot be set in the <f> mode.
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