Canon EOS 80D - Manual (Page 362)

Q Quick Control for Playback
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Exit the setting.
 Press the <Q> button to exit the
Quick Control screen.
To rotate an image, set [51: Auto rotate] to [OnzD]. If [51: Auto rotate]
is set to [OnD] or [Off], the [b Rotate image] setting will be recorded to
the image, but the camera will not rotate the image for display.
 Pressing the <Q> button during the index display will switch to the
single-image display and the Quick Control screen will appear. Pressing
the <Q> button again will return to the index display.
 For images taken with another camera, the options you can select may
be restricted.