Canon EOS REBEL T6S Instruction Manual page 397

A red box is displayed on the image.
[32: AF point disp.] is set to [Enable] (p.323).
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A red box is not displayed on the image.
Even if [32: AF point display] is set to [Enable] (p.323), the red box
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is not displayed for the following images:
• Images shot with Multi Shot Noise Reduction (p.147)
• Images recorded with distortion correction enabled (p.151)
• Images shot with <F> or <G> in <8> mode
• Cropped images (p.331)
• Images with Fish-eye effect applied after shooting (p.326)
Sensor Cleaning Problems
The shutter makes a noise during sensor cleaning.
If you selected [Clean nowf], the shutter will make a noise, but no

picture is taken (p.286).
Automatic sensor cleaning does not work.
If you repeatedly turn the power switch <1> / <2> at a short

interval, the <f> icon may not be displayed (p.42).
Troubleshooting Guide
397