Canon EOS R50 Instruction Manual page 577

5.
Select the images to use for display.
Select [Original image] to use the original HEIF images for display.
Select [Processed img.] to use the converted JPEG images for
display.
Note
Some scenes may look different after conversion if the original and converted
images are compared.
Conversion is not available for cropped images, or for frame-grab images from 4K
movies.
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