Canon EOS R5 C VR Creator Kit with RF 5.2mm f/2.8 Dual Fisheye Lens - Manual (Page 395)

4.
Rate the image.
Press < >, and a blue highlight frame will appear as shown in the
screen shown above.
Turn the < > dial to select a rating mark, then press < >.
When you append a rating mark to the image, the number beside the
set rating will increase by one.
To rate another image, repeat steps 3 and 4.
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