Adobe 5.5 Design Standard Manual de usuario descargar pdf (Pagina 64)

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Adobe Creative Suite 5 Printing Guide 62

should manually pick a black ink. This results in an additional,

unintended plate being generated during output.

Duotone Seings

e default seings for a duotone image use process black for the black plate. Choosing

Pantone Black instead, generates an extra, unwanted black plate.

To fix this problem, open the image in Photoshop, and choose Image >

Mode > Duotone to open the Duotone Options dialog box. Highlight

the incorrect black ink name, and change it to Black, with a capital “B,”

to indicate standard process black. Update the image link in InDesign or

Illustrator as necessary, and delete the extraneous ink from the

Swatches palette of the target document.

On Windows, the duotone presets are found in: C:\Program Files\

Adobe\Adobe Photoshop CS5\Presets\Duotones. In Mac OS, the

Macintosh, the presets are found in: Applications/Adobe Photoshop

CS5/Presets: Duotones. To save a custom preset for multitone images,

click Save in the Duotone Options dialog box. Save to the default

location, or choose an alternative location. Photoshop creates a file with

the .ado extension. To load a duotone preset, click Load in the Duotone

Options dialog box and navigate to the desired preset.

Bitmap images

Bitmap images (also called bilevel or line art scans) consist of only black

and white (or black and transparent) pixels, with no intermediate

shades of gray. Such images can be colorized when placed into

Illustrator or InDesign, taking on whatever color is applied. The black

areas of the bitmap image become the color of the applied swatch,

while the white areas remain unaffected.

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Some of the old restrictions on image formats no longer apply in

Creative Suite. In modern workflows, you are not limited to using TIFF

and EPS files; more modern formats such as native Photoshop and PDF

provide more flexibility and function. While you may feel more

comfortable with the time-tested formats, the newer formats offer

significant benefits. In other words, do not fear the new approaches,

and do not assume that you have to convert Photoshop files to

something more familiar in order to image a job successfully. In a full

Adobe Creative Suite workflow, the integration between Photoshop,

InDesign, Illustrator, and Acrobat means that you can take advantage of

the native Photoshop image format for successful output. By the same

token, converting layered Photoshop files or native Illustrator files to

EPS will flatten transparency, limit functionality, and may radically

change the appearance and output of such files.

Let’s look at some of the advantagesand shortcomingsof popular

image formats.

Photoshop Native Format

Photoshop’s native format (PSD) offers a number of significant

advantages for designers:

•An unlimited number of layers.

•Layer masks for nondestructive masking.

•Adjustment layers for nondestructive color correction and special

eects.

•Opacity controls.

•Blending modes that allow color interaction between layers.

•Special eects such as drop shadows and embossing.

•Spot-color support.

•Vector-drawing capabilities.

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