Canon EOS REBEL T7i Instruction Manual page 258

x Shooting with the Touch Shutter
Even if you set the drive mode to <o> or <i>, the camera will still

shoot in the single shooting mode.
Even if [AF operation] is set to [Servo AF], tapping on the screen will

focus on the image with [One-Shot AF].
Tapping on the screen in magnified view will not focus or take the picture.

If the Fish-eye effect Creative filter is set, the camera will focus using the

AF point at the center of the screen regardless of the point you tap on.
If the Miniature effect Creative filter is set, the touch shutter does not

work.
You can also set the touch shutter with [z5: Touch Shutter] (the [z2]

tab in Basic Zone modes).
To shoot with bulb exposure, tap on the screen twice. The first tap on the

screen will start the bulb exposure. Tapping it again will stop the
exposure. Be careful not to shake the camera when tapping on the
screen.
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