Canon EOS R3 Advanced User's Manual page 991

Images cannot be resized or cropped.
This camera cannot resize JPEG
4K movies saved as still photos (
This camera cannot crop RAW images or frame-grab images from 4K movies saved as
still photos ( ).
Dots of light appear on the image.
White, red, or blue dots of light may appear in captured images if the sensor is affected
by cosmic rays or similar factors. Their appearance may be reduced by performing
[Clean now ] under [ : Sensor cleaning] (
images, RAW images, or frame-grab images from
).
).
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