Canon EOS-1D X Mark III DSLR Camera (Body Only) - Manual (Page 903)

Playback problems
Part of the image blinks in black.
[ : Highlight alert ] is set to [ Enable ] ( ).
A red box is displayed on the image.
[ : AF point disp. ] is set to [ Enable ] ( ).
During image playback, the AF points are not displayed.
AF points are not displayed in playback of cropped images.
The image cannot be erased.
If the image is protected, it cannot be erased ( ).
Still photos and movies cannot be played back.
The camera may not be able to play back images taken with another camera.
Movies edited with a computer cannot be played back with the camera.
Only few images can be played back.
The images have been filtered for playback with [ : Set image search conditions ]
( ). Clear the image search conditions.
Mechanical sounds or sounds of camera operations can be heard
during movie playback.
If AF operations are performed or you control the camera or lens during movie
recording, the camera's built-in microphone may also record mechanical sounds of the
lens or sounds of camera/lens operations. In this case, using an external microphone
may reduce these sounds. If the sounds are still distracting with an external microphone,
it may be more effective to remove the external microphone from the camera and
position it away from the camera and lens.
Movie playback stops by itself.
Extended movie playback or movie playback under high ambient temperature may
cause the camera's internal temperature to rise, and movie playback may stop
automatically.
If this happens, playback is disabled until the camera's internal temperature decreases,
so turn off the power and let the camera cool down a while.
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