Adjusting The Image Tone - Canon EOS Digital Photo Professional Instruction Manual

Editing Images

Adjusting the Image Tone

You can use the tone curve, highlight/shadow points, brightness, and contrast to adjust the
image tone.
A tone curve shows the brightness and color saturation for the original image (input) and the
adjusted image (output) in the form of a line graph. You can use the tone curve to adjust the
image brightness and color saturation values that were set by the camera automatically when
the shot was taken.
The tone curve adjustment options include [RGB], which adjusts the input and output for the
entire image in a single operation, as well as the [R], [G] and [B] settings that adjust each color
individually. You can switch between the different channels as you make your adjustments.
The horizontal axis shows the brightness and color saturation for the unadjusted (input) image,
with the left-hand end indicating shadow (darker areas of the image) and the right-hand end
indicating highlights (brighter areas of the image).
The vertical axis shows the brightness and color saturation for the adjusted (output) image, with
the lower end indicating shadow and the upper end indicating highlights.
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