Canon EOS R5 C VR Creator Kit with RF 5.2mm f/2.8 Dual Fisheye Lens - Manual (Page 138)

3.
Select how the shooting area is displayed.
On the screen in step 2, press the < > button.
Select the type of display, then press < >.
Caution
/ / / image quality options are not available when
[ 1.6x (crop) ] is set, or with EF-S lenses.
Shooting with [ 1.6x (crop) ] and image quality set to / /
/ produces / / / images, respectively.
Shooting with an EF-S lens when [ 1:1 (aspect ratio) ], [ 4:3
(aspect ratio) ], or [ 16:9 (aspect ratio) ] is set automatically clears
the setting and shoots with [ 1.6x (crop) ] at a 3:2 aspect ratio.
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