Canon EOS Rebel T5i 18-55mm IS STM Kit Instruction Manual page 158

A Menu Function Settings
Metering timerN
You can change how long the exposure setting is displayed (AE lock
time). In Basic Zone modes, metering timer is fixed at 16 sec.
The Live View shooting will stop with any of the following operations. To
resume Live View shooting, press the <A> button again.
• When selecting [z3: Dust Delete Data], [53: Sensor cleaning],
[54: Clear settings], or [54: z firmware ver.]
Even if a low ISO speed is set, noise may be noticeable in the displayed
Live View image under low light. However, when you shoot, the image
recorded will have minimal noise. (The image quality of the Live View
image is different from that of the recorded image.)
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