Canon EOS-1D X Mark III Advanced User's Manual page 459

Erasing All Images in a Folder or on a Card
You can erase all the images in a folder or on a card at once.
When you select [All images in folder] or [All images on card] in [
all the images in the folder or on the card will be erased.
If the search conditions are set with [
display will change to [All found images].
• If you select [All found images], all the images filtered by the search conditions will
be erased.
Note
To erase all the images including protected images, format the card (
Erasing images by selecting [All images on card] applies to the card selected in
[ : Record func+card/folder sel.] (in either [
or [ Play]/[ Play]).
: Set image search conditions] (
Record/play]/[
459
: Erase images],
), the
).
Record/play]