Canon EOS R5 Mark II Advanced User's Manual page 219

Settings and Effects
Sharpness
Contrast
Saturation
Color tone
* 1: Indicates the edge thinness that enhancement applies to. The smaller the number, the finer the
outlines that can be emphasized.
* 2: Contrast threshold between edges and surrounding image areas, which determines edge
enhancement. The smaller the number, the more the outline will be emphasized when the contrast
difference is low. However, noise tends to be more noticeable when the number is smaller.
Strength 0: Weak outline emphasis
1
Fineness* 1: Fine
2
Threshold* 1: Low
–4: Low contrast
–4: Low saturation
–4: Reddish skin tone
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7: Strong outline emphasis
5: Grainy
5: High
+4: High contrast
+4: High saturation
+4: Yellowish skin tone