Still Image Aspect Ratio - Canon EOS 90D Advanced User's Manual

Still Image Aspect Ratio

You can change the image's aspect ratio.
JPEG images

The images will be recorded with the set aspect ratio.
RAW images

The images will always be recorded in the [3:2] aspect ratio. The selected
aspect ratio information is added to the RAW image fi le. When you
process the RAW image with Digital Photo Professional (EOS software),
this allows you to generate an image with the same aspect ratio set for
shooting.
202
1
Select [z: Still img aspect ratio].
2
Set the aspect ratio.
Select an aspect ratio, then press < 0 >.

M