Canon EOS-1D X Mark II DSLR Camera (Body Only) - Manual (Page 518)

Troubleshooting Guide
518
[ 3 3: Highlight alert ] is set to [ Enable ] (p.350).
[ 3 3: AF point disp. ] is set to [ Enable ] (p.351).
When you play back an image applied with distortion correction
(p.195), the AF points are not displayed.
If the image is protected, it cannot be erased (p.358).
Copying movie files exceeding 4 GB may not work. For details, see
page 382.
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.
If you operate the camera’s dials or lens during movie shooting, the
operation sound will also be recorded. Using the Directional Stereo
Microphone DM-E1 (sold separately) is recommended (p.323).
Playback Problems
Part of the image blinks in black.
A red box is displayed on the image.
During image playback, the AF points are not displayed.
The image cannot be erased.
The movie cannot be copied.
Still photos and movies cannot be played back.
Operation sound and mechnical sound can be heard
during movie playback.