GoPro HERO4 Silver Mode D'emploi page 66

/ Protune
COLOR
Color allows you to adjust the color profile of your video footage or photos.
Color Setting
GoPro Color
(default)
Flat
ISO LIMIT
ISO Limit adjusts the camera's sensitivity in low-light environments,
and creates a balance between brightness and resulting image noise.
Image noise refers to the degree of graininess in the image.
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Resulting Color Profile
Provides GoPro color-corrected profile (same
great color as when Protune is turned off).
Provides neutral color profile that can be
color-corrected to better match footage
captured with other equipment, offering more
flexibility in post-production. Due to its long
curve, Flat captures more details in shadows
and highlights.