Creating a spot color channel

Printing a Photoshop image can be a costly process, especially if a spot color is used. A spot color is one that can't easily be re-created by a printer, such as a specific color used in a client's logo. By creating a spot color channel, you can make it easier for your printer to create the ink for a difficult color, assure yourself of accurate color reproduction, and save yourself high printing costs. If you use this feature, you won't have to provide your printer with substitution colors: the spot color contains all of the necessary information. You can create a spot color channel by displaying the Channels palette, clicking the Channels palette list arrow, then clicking New Spot Channel. Create a meaningful name for the new spot channel, click the Color box, click the Color Libraries button in the Color Picker dialog box, click the Book list arrow, then click a color-matching system. You can also create a custom color by clicking the Picker button in the Custom Colors dialog box. If you have created a color sampler, you can use this information to create the custom color for the spot color channel. Click OK to close the Custom Color dialog box, then click OK to close the New Spot Channel dialog box.

FIGURE 15

Unsharp Mask dialog box

FIGURE 15

Unsharp Mask dialog box i t* i I cruel I

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FIGURE 17

Lighting effect applied

Lighting Effects

PI Preview m

• Unsharp Mask changes the appearance of the Large Parrot layer

Lighting effect changes the appearance of the Backdrop layer

ISPoirol V/orlil.psd jjg 10051 (Pariol World, RGBffl")

FIGURE 17

Lighting effect applied

ISPoirol V/orlil.psd jjg 10051 (Pariol World, RGBffl")

• Unsharp Mask changes the appearance of the Large Parrot layer

Lighting effect changes the appearance of the Backdrop layer

FIGURE 16

Lighting Effects dialog box sste aiutOm V I Dt. I

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Intensity

Negative

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Wide

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Glare

Matte

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Exposure;

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Apply a color sampler and filter and add a lighting effect

1. Make the Large Parrot layer active.

2. Click Filter on the menu bar, point to Sharpen, then click Unsharp Mask.

You are now ready to put the finishing touches on your color-corrected image.

3. Adjust your settings in the Unsharp Mask dialog box as necessary so they match those shown in Figure 15, then click OK. These settings emphasize the edges and create the illusion of a sharper image.

4. Make the Backdrop layer active.

5. Click Filter on the menu bar, point to Render, then click Lighting Effects.

6. Adjust your settings in the Lighting Effects dialog box so they match those shown in Figure 16, then click OK.

7. Double-click the Parrot World layer thumbnail, then click Set the text color box on the options bar.

8. Type the R, G, and B values in sample 3 on the Info palette in the Color Picker dialog box, click OK, then click the Commit any current edits button on the options bar.

9. Save your work, hide the color samplers, then compare your screen to Figure 17.

10. Close the Parrot World image, then exit Photoshop.

You added the Unsharp Mask and Lighting Effects filters to make the objects stand out more dramatically against the background. You also changed the type color using the values from a sampled color.

SKILLS REFERENCE

Power User Shortcuts to do this: use this method:

Adjust color with thumbnails

Image > Adjustments > Variations

Adjust saturation

Image > Adjustments > Hue/Saturation

Balance colors

Image > Adjustments > Color Balance

Choose color range

Click Edit list arrow in Hue/Saturation dialog box, click color range

Convert color layer to grayscale

Image > Adjustments > Hue/Saturation

Create color sampler

Click click image using ^^ in image

Create spot color channel

Click ChannelsN click New Spot Channel

Delete color sampler

Click "fX Dress [Altl (Win) or °f"ion 1 (Mac), click sampler using

to do this:

use this method:

Modify curves

Image > Adjustments > Curves

Modify levels

Image > Adjustments > Levels

Move color sampler

Click sampler with Ky^

Open Histogram palette

Lifistogram^V

Open Info palette

Saturate with Sponge Tool

or 0

Show/Hide color samplers

Click info ^ click ® > Color Samplers

Key: Menu items are indicated by > between the menu name and its command. Blue bold letters are shortcuts for selecting tools on the toolbox.

CHAPTER SUMMARY

Photoshop offers many settings and tools you can use to affect the colors in layers or select areas of the image. Photoshop tools enable you to tweak colors in a variety of ways including making color adjustments using the Levels dialog box and monitoring the Histogram palette. Everyone wants colors to look nice, but as designers, Photoshop professionals also want their colors to reproduce accurately. If you don't want to work with all the tools and settings, or prefer to let the software determine the colors, there are Auto Adjustments commands that will make adjustments for you.

By modifying color settings and precise measurement, you can ensure that once your color image goes to a commercial printer, the yellows, blues, and reds you see on your monitor are what you'll see on the printed page.

What You Have Learned:

• How to modify color balance settings

• How to modify curves

• How to saturate a color range

• How to use the Sponge Tool

• How to use Levels to adjust color

• How to create color samplers

• How to apply a color sampler

Key Terms

Balance colors The process of adding and subtracting tonal values from those already existing in a layer.

Color management system (CMS)

Method of reconciling differences between different devices so colors can be reproduced accurately.

Color Sampler Tool Tool that makes it possible to sample—and store—up to four distinct color samplers.

Histogram A graph that represents the frequency distribution of colors and is used to make adjustments in the input and output levels.

Hue The name of the color, such as red, blue, or gold. Also, the amount of color that is reflected from or transmitted through an object.

Tonal values Also called color levels. The numeric values of an individual color, which can be used to duplicate a color.

Spot color A color that can't easily be re-created by a printer, such as a specific color used in a client's logo.

ICC profile Created for specific devices and embedded in an image, and is used to define how colors are interpreted by a specific device. ICC stands for International Color Consortium.

chapter

Photoshop Secrets

Photoshop Secrets

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