Canon FS 3.6 manual How to Interpret the Tone Curve, Adjusting a Tone Curve, S Curve

How to Interpret the Tone Curve

In CanoCraft FS, the data from the scanner is the input and the data sent to the display is the output. The tone curve expresses the relationship between the input and output values of the color tones, from shadows to highlights.

Step 3 • Adjusting Images

Brightness	Highlight
Output				Tone Curve
		Shadow
			Shadow		Highlight
				Input Brightness

Adjusting a Tone Curve

The images below demonstrate how to adjust the brightness of an image by changing the tone curve.

Output

Tone Curve before

Adjustment

Convex Curve

Input

Concave

Curve

*Make the curve shape as smooth as possible to provide a natural appearing effect. The changes in the settings will be reflected in the preview image, so check the

preview image from time to	S Curve
time as you make changes.

The input halftone data value is higher than the output highlights, making the image brighter in the display.

Output

Input

The input halftone data value is higher than the output shadows, making the image darker in the display.

Output

Input

The input highlights and shadows are emphasized, providing the image with a sharp contrast.

Output

Input

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