Comparing Cmyk And Rgb Mode Corrections - Adobe PHOTOSHOP 5.0 User Manual

To use the Color palette to preview color values:
Choose Window > Show Color.
1
Select the eyedropper tool ( ).
2
Open a color adjustment dialog box (see "Using
3
color adjustment commands" on page 105).
4 Click the pixel you want to preview in the
image.
The color values of the pixel after the adjustment
has been made are shown in the Color palette.
Saving and loading color adjustment
settings
The Save and Load buttons in the Levels, Curves,
Selective Color, Replace Color, Hue/Saturation,
and Variations dialog boxes let you save color
corrections and apply them to other images.
To apply a color correction adjustment to another
image:
1 Click Save in the color correction dialog box you
are using, and name and save the color correction
settings.
Close the color correction dialog box, and
2
open the image to which you want to apply the
corrections.
Reopen the color correction dialog box, and
3
click Load. Locate and open the saved color
correction file.
Click OK to apply the corrections to the image.
4
If you routinely apply the same color
correction, consider recording and
running the correction as an action.
Comparing CMYK and RGB mode
corrections
Even though you can perform all tonal and color
corrections in either RGB or CMYK mode, you
should choose carefully.
Whenever possible avoid multiple conversions
between modes, because color values are rounded
and lost with each conversion. If an RGB image is
to be used on-screen, you needn't convert it to
CMYK mode. Conversely, if a CMYK scan is to be
separated and printed, you needn't perform
corrections in RGB mode.
But if you must convert your image from one
mode to another anyway, it makes sense to
perform most of your tonal and color corrections
in RGB mode and use CMYK mode for fine-
tuning. Keep in mind the following advantages of
working in RGB mode:
You save memory and improve performance.
•
You have more device independence, because
•
RGB color spaces are not dependent on monitors
or inks. Corrections made to the image are
preserved regardless of the monitor, computer,
or output device used. If any of these devices
change, simply change the appropriate CMYK
Setup options and then reconvert the RGB image
to CMYK.
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User Guide