Canon EOS-1D X Mark III Advanced User's Manual page 900

The movie appears to freeze momentarily.
Significant change in the exposure level during Program AE recording may cause
recording to stop momentarily until the brightness stabilizes. In such a case, shoot in the
< > mode (
The movie is played in slow motion.
High Frame Rate movies are recorded at 29.97 fps or 25.00 fps, so they are played in
slow motion at 1/4 speed.
No picture appears on the television.
Make sure [ : Video system] is set to [For NTSC] or [For PAL] correctly for the video
system of your television.
Make sure the HDMI cable's plug is inserted all the way in (
My card reader does not recognize the card.
CFexpress cards may not be correctly recognized by some card readers or in some
operating systems. In this case, connect the camera to the computer with the interface
cable, then import the images to the computer using EOS Utility (EOS software,
Images cannot be resized or cropped.
JPEG images, RAW images, images captured with [
[ : HDR PQ settings] set to [Enable], and frame-grab images from 4K movies saved
as still photos cannot be resized with the camera (
RAW images, images captured with [
settings] set to [Enable], and frame-grab images from 4K movies saved as still photos
cannot be cropped with the camera (
Dots of light appear on the image.
White, red, or blue dots of light may appear in captured images if the sensor is affected
by cosmic rays or similar factors. Their appearance may be reduced by performing
[Clean now
).
] under [ : Sensor cleaning] (
: HDR shooting
).
: HDR shooting
).
).
900
).
] in [ : HDR PQ
).
] in