Curves map original brightness to edited brightness. A gentle shape can create rich contrast, while a poorly placed point can flatten faces or clip highlights.
A practical way to approach it
Read the diagonal
The lower-left area represents darker tones and the upper-right area represents brighter tones. A straight diagonal means no tonal change.
Bend with care
Lift lower midtones to brighten dark subjects; lower upper midtones to tame bright areas. Compare a few modest points instead of making sharp corners.
Watch color channels
RGB curves affect tone; individual red, green and blue curves can introduce a color cast, especially in gray areas.
One limitation to remember
Do not use curves to repair clipped source pixels that contain no recorded detail.
Continue in MintGrade: Curve controls
The lower-left area represents darker tones and the upper-right area represents brighter tones. A straight diagonal means no tonal change.
Opens the relevant controls for JPG, PNG and WebP files. No edit is applied until you choose one.
Open curve controls in MintGrade →