Canon EOS 5D Mark IV L-series Zoom Lens Kit Manuel Du Propriétaire

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3
 Setting the Movie Recording Quality
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When shooting movies, use a large-capacity card with a reading/writing 
speed (required card performance) shown in the table or higher than 
the standard specification. Test the card by taking a few movies in the 
desired quality (p.351) and make sure the card can properly record the 
movie.
Cards that Can Record Movies
Movie Recording Quality
CF Card
SD card
H
65B4
J
UDMA 7
100 MB/sec. or faster
UHS-I
90 MB/sec. or faster
L
87
W
UDMA 7
60 MB/sec. or faster
  UHS-I Speed
Class 3 or higher
87
X
30 MB/sec. or faster
SD Speed
Class 10 or higher
65B4
W
30 MB/sec. or faster
UHS-I Speed
Class 3 or higher
65B4
HDR movies
X
10 MB/sec. or faster
 SD Speed
Class 6 or higher
65
V
10 MB/sec. or faster
 SD Speed
Class 4 or higher
w
23
W
UDMA 7
 60 MB/sec. or faster
  UHS-I Speed
Class 3 or higher
 
Before shooting 4K movies, format the card (p.73).
 
If you use a slow-writing card when shooting movies, the movie may not 
be recorded properly. Also, if you play back a movie on a card with a 
slow reading speed, the movie may not be played back properly.
 
For bit rates, see page 580. When shooting movies, use a high 
performance card with the writing speed well exceeding the bit rate.
 
When movies cannot be recorded normally, format the card and try 
again. If formatting the card does not resolve the problem, refer to the 
card manufacturer’s Web site.