The tone curve explained: precise control over contrast
The tone curve is the most powerful tonal tool in editing. Learn S-curves, matte looks and channel curves.
The tone curve maps input brightness to output brightness. Bending it changes contrast and mood with more precision than sliders.
Reading the curve
The bottom left is shadows, the top right is highlights. A straight diagonal means no change. Raising a point brightens those tones; lowering it darkens them.
The S-curve
Lower the shadows slightly and raise the highlights slightly. This creates an S shape that adds contrast while keeping midtones intact.
The matte look
Raise the black point at the bottom left so the darkest tones become gray. This creates the faded film look popular on Instagram. Use it subtly.
Point curve vs parametric
The parametric curve uses sliders for highlights, lights, darks and shadows. The point curve lets you add points anywhere for full control.
RGB channel curves
Adjust red, green or blue separately for color grading. Adding blue to shadows and yellow to highlights creates a cinematic look.
Targeted adjustment
Click and drag directly on the photo to adjust the tones under the cursor.
