Graphics Programs Reference
In-Depth Information
best visual evaluation. You can double-click the Zoom tool to do
this or use the Command/Control 0 (zero) key command.
2. Choose Image-Mode-Convert to Profile in Photoshop CS or
Edit-Convert to Profile in CS2 as seen in Fig. 9-3-1.
From the Profile pop-up menu, select U.S. Web Coated
(SWOP) v2 .
From the Engine pop-up menu, select Adobe ACE .
From the Intent pop-up menu, select Relative Colorimetric .
Have Use Black Point Compensation and Use Dither check
boxes on.
Be sure the Preview check box is on.
3. Using the intent pop-up menu, select Perceptual and then
toggle back to Relative Colorimetric as many times as
necessary to see the effect on this gradient. Hopefully you should
notice how selecting Perceptual alters a great deal more of the
colors being seen since the idea is for this rending intent to alter
all colors in a nonuniform fashion. Relative Colorimetric
produces a more abrupt transition, especially in the very
saturated areas of the gradient toward the center of the
document.
4. Also, toggle the Saturation intent to see its effect. With any of
the intents, you may wish to toggle on and off the Preview
check box, which will turn the conversion preview on and off.
This also makes it easier to see the effect of the rendering intent
on the original colors. Also, try the Absolute Colorimetric
rendering intent to see how the white area toward the bottom is
affected. You may also wish to view the effects of the Black
Point Compensation check box on this image. Be aware this is
Fig. 9-3-1 The Convert
to Profile command
should be set as seen here.
It is OK if the source space
is not LAB color.
Search WWH ::




Custom Search