Canon EOS-1D X Mark III Advanced User's Manual page 450

Protecting All Images in a Folder or on a Card
You can protect 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 [
images], all the images in the folder or on the card will be protected.
To cancel protection, select [Unprotect all images in folder] or [Unprotect all images
on card].
If the search conditions are set with [
display will change to [All found images] and [Unprotect all found].
• If you select [All found images], all the images filtered by the search conditions will
be protected.
• If you select [Unprotect all found], the protection of all the filtered images will be
canceled.
Note
Protecting or unprotecting images by selecting [All images on card] or [Unprotect
all images on card] applies to the card selected in [ : Record func+card/folder
sel.] (in either [ Record/play]/[ Record/play] or [
: Set image search conditions] (
450
: Protect
), the
Play]/[ Play]).