How To Interpret The Tone Curve; Adjusting A Tone Curve - Canon FS 3.6 User Manual

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.

Adjusting a Tone Curve

The images below demonstrate how to adjust the brightness of an image by
changing the tone curve.
Tone Curve before
Adjustment
Input
* 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
time as you make changes.
Convex Curve
Concave
Curve
S Curve
Step 3 • Adjusting Images
Highlight
Shadow
Shadow
The input halftone data value is higher
than the output highlights, making the
image brighter in the display.
Input
The input halftone data value is higher
than the output shadows, making the
image darker in the display.
Input
The input highlights and shadows are
emphasized, providing the image with a
sharp contrast.
Input
Tone Curve
Highlight
Input Brightness
66