Graphics Programs Reference
In-Depth Information
click to set. With Highlight and Shadow values both pegged, all the values in the picture
will be adjusted to suit. Note that the Info palette will show before and after values when
making changes, for example 42/48 (before/after). When sampling white areas, you should
avoid specular highlights such as the shine from the surface of a metallic object as these
parts of the picture contain no printable details.
The Levels control allows
you to interactively
control the spread of
pixels within your image.
(1) Input values.
(2) Output values.
1
2
Color correction with the gray point eyedropper
The gray point eyedropper performs in a similar manner to the Color Cast command. With
the tool selected, the user clicks on an area in the picture that should be a neutral gray. The
color of the area is changed to neutral gray or equal amounts of red, green and blue, chang-
ing with it all the other pixels in the image. This tool is particularly useful for neutralizing
color casts.
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1
3
4 fthe preci
preci
6
5
The Info dialog displays a readout of the precise values of a group of pixels.
(1) First readout.
(2) Second readout.
(3) Sample position.
(4) Marquee size.
(5) Document information.
(6) Info palette options.
NOTE: If you create a shape then Transform it you will see readouts for width (W),
height (H), angle of rotation (A) and angle of skew (H). If you click and drag the
shape, you also get readouts for Delta X (X), Delta Y (Y), angle (A) and distance (D).
 
 
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