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øHueî is the color in color and ¿saturationî refers to how vivid the color is.
Hue and saturation, along with brightness, or value, are the three components of what is generally called $B%=(Bcolor.$B{(B |
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When you open [Hue/Saturation], a dialog box with three sliders, îHue,î îSaturation,î and îLightnessî opens. The sliders are initially set to the middle position (zero). If the îSaturationî or îLightnessî slider is moved to the right (plus), saturation or lightness will increase and will decrease if moved to the left. From the [Edit] pop up menu, a specific color channel can be selected. |
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Experiment with adjusting the hue and check the results. |
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This is the image before any adjustment. |
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Open the ¿Hue/Saturationî dialog box and move the Hue slider. As you move it watch the two color gradient bars at the bottom of the dialog box. The top gradient is the original color and the bottom is the color after adjustment. Before adjustment, the color gradients are identical, but as you move the hue slider, the lower gradient changes. The difference in the top and bottom gradient indicates the amount of change in the hue of the image. |
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Now, check what happens when you change the saturation.
Lower and raise the saturation. |
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This is the image before any
adjustment. |
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Looking at the original image,
move the saturation slider to the left (minus) and notice how the color fades toward a monotone gray.
Now move the slider to the right (plus) and notice how the colors become more pronounced. |
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Move the slider to the left and the color
gradually fades to gray. |
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Move the slider to the right and the color
gradually becomes more pronounced, approaching pure color. |
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Open the ?Hue/Saturation$B!&(Bdialog
box and choose the color you want to adjust from the pop-up Edit menu. This can be effective if working
on the master channel (all colors) produces undesirable changes. |
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This is the image before any
adjustment. With this image, work on green, adjusting hue and saturation.
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Open the ?Hue/Saturation$B!&(Bdialog
box and select the Green channel from the "Edit" menu. The gradient bar displayed at the bottom of
the dialog box changes, showing the limits of the color being adjusted. In addition, at this time,
the Plus eyedropper can be used to expand the range of the object color compensation; the Minus eyedropper
can be used to restrict the range. |
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With the green channel selected,
you shifted the hue and raised the saturation. This time, for the sake of illustration, shift the
hue so that the greens are now reds. On the lower color gradient bar, the color has changed fully.
The portion of the image with elevated saturation is quite colorful. |
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![These supplementary functions are used during retouching.]](../../images/reference/function/menu_photo_e.jpg)
