Brightness/contrast/saturation are >= 0, where 1 means unchanged. sharpness is also >= 0, but unlike the others 1 (or below) means no sharpening — values above 1 increase sharpening strength.
>= 0
1
sharpness
Brightness/contrast/saturation are
>= 0, where1means unchanged.sharpnessis also>= 0, but unlike the others1(or below) means no sharpening — values above1increase sharpening strength.