Epson Expression 800 User Manual - TWAIN 32 - Page 49

Adjusting Tone Curves, Using the Tone Curve, Adjusting Tone Curves of Individual Colors

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Adjusting Tone Curves When an image needs adjustment, it's usually because it is too dark or too light. However, sometimes only parts of an image need adjustment. In such cases, you can use a tone curve to adjust only those tones that are too dark or too light. You can adjust the tones in the middle range (midtones) as well as the highlights and shadows by changing the shape of the tone curve. For example, you may have a group photo where everyone is well-lit except one person in the foreground who was too close to the flash and looks washed out. Since the other subjects in the photo look fine (they are in the midtone ranges), you can adjust the washed-out area (the highlight range) by decreasing the highlight value of the image. Or suppose you have a photo where some objects are too dark and others are too light (such as an outdoor photo on a bright, sunny day). Darkening the highlights and lightening the shadows can balance the tones. There are several tools you can use to adjust the tone curves. It may take some practice to find the best ways of using these tools for optimum results. See these sections for details:  Using the Tone Curve  Adjusting Tone Curves of Individual Colors  Using the Tone Curve Sliders  Saving and Loading Tone Curve Settings Adjusting Image Quality Page 49

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Adjusting Image Quality
Page 49
Adjusting Tone Curves
When an image needs adjustment, it’s usually because it is too dark or
too light. However, sometimes only parts of an image need adjustment. In
such cases, you can use a tone curve to adjust only those tones that are
too dark or too light. You can adjust the tones in the middle range
(midtones) as well as the highlights and shadows by changing the shape
of the tone curve.
For example, you may have a group photo where everyone is well-lit
except one person in the foreground who was too close to the flash and
looks washed out. Since the other subjects in the photo look fine (they are
in the midtone ranges), you can adjust the washed-out area (the highlight
range) by decreasing the highlight value of the image. Or suppose you
have a photo where some objects are too dark and others are too light
(such as an outdoor photo on a bright, sunny day). Darkening the
highlights and lightening the shadows can balance the tones.
There are several tools you can use to adjust the tone curves. It may take
some practice to find the best ways of using these tools for optimum
results. See these sections for details:
Using the Tone Curve
Adjusting Tone Curves of Individual Colors
Using the Tone Curve Sliders
Saving and Loading Tone Curve Settings