I came across this numbers for editing pictures on your phone.
Start with exposure to 100
Brilliance 100
Highlights -15
Shadows -15
Contrast -25
Brightness -10
Black point 10
Saturation 10
Vibrance 20
Warmth -10
Tint 10
Sharpness 25
Definition 25
Noise Reduction 0
Vignette 30
Now go back to exposure and move it back to 0.
I got amazing results!
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