Canon EOS-1D X Mark III Advanced User's Manual page 163

2.
Select the desired image size.
Note
To set separate image sizes for each card when [
func+card/folder sel.] is set to [Rec. separately] (
a card, and set the image size.
"Image quality" in this guide refers to both image size and JPEG/HEIF quality (
HEIF can be specified when [HDR shooting
set to [Enable]. You can convert these images to JPEG images after shooting (
Setting size via the menu
1.
Select [
Turn the < > dial to select the image size.
Both RAW and JPEG images will be captured when
/ / / are displayed together.
Both RAW and HEIF images will be captured when
are displayed together.
Turn the < > dial to select the card for recording and playback
( ).
: Img type/size].
The screen displayed varies depending on [
in [ : Record func+card/folder sel.].
Record func.] in [ : Record
), turn the <
] in [
163
/
/
> dial, select
: HDR PQ settings] is
Record func.] settings
and
and /
).
).