Apple Mac OS X Panther Specifications download pdf (Page 16)

Editing Images

Once you know you can trust what you see on your display, you can adjust the color

in your images. Choose an application that is ICC aware, such as Adobe Photoshop.

By using an ICC-aware application, you can ensure that the color information in your

image will be appropriately managed as you make changes or move the image into

the output phase of the color workflow.

Soft Proofing

Based on the Portable Document Format (PDF) 1.4 standard, Quartz is the native

Mac OS X 2D drawing engine that generates text, vector, and raster images onscreen.

Applications that use Quartz automatically support ColorSync. These applications

include Preview, Mail, and Safari—all of which come with Panther. This feature has

major implications for the color workflow, especially for soft proofing.

In Panther, Quartz has been extended with new functionality called Quartz Filters.

These filters let you manage color, create special color effects, compress images, and

produce PDF/X-3 files. They leverage the power of Quartz to control, preview, and

alter images and PDF documents. You can use Quartz Filters in ColorSync Utility to

soft proof files onscreen, or create hard-copy proofs from almost any application by

applying Quartz Filters from the Print dialog.

With Quartz Filters, you and your clients can view a proof of the image on the fly—

even if your clients don’t have an application such as Photoshop installed. When

clients open a tagged image in a built-in Mac OS X application such as Preview, Mail,

or Safari, ColorSync automatically matches the image to their displays. If you have

tagged the image with the profile for the printer, then they are viewing a soft proof

of the final output. It’s like having a virtual press printout, right on the screen. The

ability to share proofs electronically can dramatically reduce the time and cost of

color proofing cycles.

Instead of printing the image multiple times, you can “overlay” Quartz Filters onto

images to enable accurate, onscreen proofing. Here’s how you can use a Quartz Filter

to soft proof your files.

1. Open ColorSync Utility (/Applications/Utilities/ColorSync Utility).

2. Click the Filters icon in the toolbar.

3. Click the “View file with Filter” button at the bottom of the window.

4. In the Open dialog, choose the file you want to proof.

5. Click the New button below the list of filters.

6. Double-click Untitled and name the new filter.

7. Under Details, click the pop-up menu and choose Color.

8. Under Objects, leave the All checkbox checked.

9. Click the “Convert color data to” pop-up menu and select the device profile of the

device you are proofing (for example, a printing press profile, which you would have

installed earlier).

10. Click the Preview checkbox in the toolbar.

A Technology Tour

Color Management

with Mac OS X Panther

About rendering intent

The rendering intent indicates what

ColorSync should do when translating

color information from the source gamut

to the destination gamut. While color is

highly subjective, here are a few tips to

get you started:

• For the most beautiful, rich color, select

Perceptual.

• If you’re sending the image to a proofing

device, start with Absolute (Colorimetric).

• For punchy presentation graphics, try

Saturation.

• If your goal is to maintain precise color—

in a logo, for example—use Relative

(Colorimetric).

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Apple Mac OS X Panther Specifications Page 16

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