Canon EOS R3 Advanced User's Manual page 984

The subject looks distorted during movie recording.
If you move the camera to the left or right (panning) or shoot a moving subject, the
image may look distorted.
Sound is not recorded in movies.
Sound is not recorded in High Frame Rate movies.
A time code is not added.
Time codes are not added when you record High Frame Rate movies with [Count up] in
[ : Time code] set to [Free run] (
video output (
Time codes advance faster than the actual time.
Time codes in High Frame Rate movie recording advance 4 sec. per second (
I cannot take still photos during movie recording.
Still photos cannot be taken during movie recording. To shoot still photos, stop recording
the movie, then select a shooting mode for still photos.
I cannot record movies during still photo shooting.
It may not be possible to record movies during still photo shooting if operations such as
extended image display increase the camera's internal temperature. Turn off the camera
or take other measures, and wait until the camera cools down.
Lowering the [
Cannot record movies.
Format (initialize) the card with this camera (
Use an SDXC card as card [
The camera vibrates.
Image stabilization by the camera may make the camera seem to vibrate. This does not
indicate damage.
).
] movie recording quality may enable movie recording.
].
). Additionally, no time code is added to HDMI
).
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