Canon EOS-1D X Mark III DSLR Camera (Body Only) - Manual (Page 930)

Guide to image size settings (approx.)
Image Size Pixels Recorded File Size (MB) Available Shots Maximum Burst
JPEG
20 M 7.6 40650 1,000 or more
13 M 5.4 56960 1,000 or more
8.9 M 4.1 74070 1,000 or more
5.0 M 2.8 109110 1,000 or more
HEIF
20 M 7.6 39650 1,000 or more
RAW
20 M 22.1 14150 1,000 or more
20 M 13.1 27560 1,000 or more
RAW+JPEG
20 M
20 M 22.1
7.6
10500 1,000 or more
20 M
20 M 13.1
7.6
16420 1,000 or more
RAW+HEIF
20 M
20 M 24.3
7.6
9620 350
20 M
20 M 13.7
7.6
14380 420
• Number of shots available and maximum burst as measured in viewfinder shooting with
a 325 GB card conforming to Canon testing standards.
• Varies depending on shooting conditions (such as when JPEG/HEIF image quality is set
to 8, as well as the subject, memory card brand, ISO speed, Picture Style, and Custom
Functions).
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