Canon EOS R5 C VR Creator Kit with RF 5.2mm f/2.8 Dual Fisheye Lens - Manual (Page 387)

Specifying the Range of Images to Erase
While looking at the images in the index display, you can specify the first and last images for
a range to erase all the specified images at once.
1.
Select [Select range].
Select [ Select range ] in [ : Erase images ].
2.
Specify the range of images.
Select the first image (start point).
Next, select the last image (end point). A checkmark [ ] will be
appended to all the images within the range between first and last
images.
To select another image to be erased, repeat step 2.
3.
Press the < > button.
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