Adobe 13102498 User Guide - Page 467

Maximize compatibility when saving files, Photoshop format (PSD), Photoshop 2.0 format

Page 467 highlights

PHOTOSHOP CS3 460 User Guide Maximize compatibility when saving files 1 Choose Edit > Preferences > File Handling (Windows) or Photoshop > Preferences > File Handling (Mac OS). 2 Choose Always from the Maximize PSD File Compatibility menu. This saves a composite (flattened) image along with the layers of your document. Note: If file size is an issue or if you're opening your files only in Photoshop, turning off Maximize PSD File Compatibility reduces the file sizes significantly. From the Maximize PSD File Compatibility menu, choose either Ask to be asked whether to maximize compatibility when you save or Never to save your document without maximizing compatibility. If you edit or save an image using an earlier version of Photoshop, unsupported features are discarded. Photoshop format (PSD) Photoshop format (PSD) is the default file format and the only format, besides the Large Document Format (PSB), that supports most Photoshop features. Because of the tight integration between Adobe products, other Adobe applications, such as Adobe Illustrator, Adobe InDesign, Adobe Premiere, Adobe After Effects, and Adobe GoLive, can directly import PSD files and preserve many Photoshop features. For more information, see Help for the specific Adobe applications. When saving a PSD, you can set a preference to maximize file compatibility. This saves a composite version of a layered image in the file so it can be read by other applications, including previous versions of Photoshop. It also maintains the appearance of blended layers in the future. 16-bits-per-channel and high dynamic range 32-bits-per-channel images can be saved as PSD files. Photoshop 2.0 format (Mac OS) You can use this format to open an image in Photoshop 2.0 or to export an image to an application supporting only Photoshop 2.0 files. Saving in Photoshop 2.0 format flattens your image and discards layer information. Photoshop DCS 1.0 and 2.0 formats Desktop Color Separations (DCS) format is a version of the standard EPS format that lets you save color separations of CMYK images. You can use DCS 2.0 format to export images containing spot channels. To print DCS files, you must use a PostScript printer. Photoshop EPS format Encapsulated PostScript (EPS) language file format can contain both vector and bitmap graphics and is supported by virtually all graphics, illustration, and page-layout programs. EPS format is used to transfer PostScript artwork between applications. When you open an EPS file containing vector graphics, Photoshop rasterizes the image, converting the vector graphics to pixels. EPS format supports Lab, CMYK, RGB, Indexed Color, Duotone, Grayscale, and Bitmap color modes, and does not support alpha channels. EPS does support clipping paths. Desktop Color Separations (DCS) format, a version of the standard EPS format, lets you save color separations of CMYK images. You use DCS 2.0 format to export images containing spot channels.To print EPS files, you must use a PostScript printer. Photoshop uses the EPS TIFF and EPS PICT formats to let you open images saved in file formats that create previews but are not supported by Photoshop (such as QuarkXPress®). You can edit and use an opened preview image just as any other low-resolution file. An EPS PICT preview is available only in Mac OS.

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PHOTOSHOP CS3
User Guide
460
Maximize compatibility when saving files
1
Choose Edit > Preferences > File Handling (Windows) or Photoshop > Preferences > File Handling (Mac OS).
2
Choose Always from the Maximize PSD File Compatibility menu. This saves a composite (flattened) image along
with the layers of your document.
Note:
If file size is an issue or if you’re opening your files only in Photoshop, turning off Maximize PSD File Compatibility
reduces the file sizes significantly. From the Maximize PSD File Compatibility menu, choose either Ask to be asked
whether to maximize compatibility when you save or Never to save your document without maximizing compatibility.
If you edit or save an image using an earlier version of Photoshop, unsupported features are discarded.
Photoshop format (PSD)
Photoshop format (PSD) is the default file format and the only format, besides the Large Document Format (PSB),
that supports most Photoshop features. Because of the tight integration between Adobe products, other Adobe appli-
cations, such as Adobe Illustrator, Adobe InDesign, Adobe Premiere, Adobe After Effects, and Adobe GoLive, can
directly import PSD files and preserve many Photoshop features. For more information, see Help for the specific
Adobe applications.
When saving a PSD, you can set a preference to maximize file compatibility. This saves a composite version of a
layered image in the file so it can be read by other applications, including previous versions of Photoshop. It also
maintains the appearance of blended layers in the future.
16-bits-per-channel and high dynamic range 32-bits-per-channel images can be saved as PSD files.
Photoshop 2.0 format
(Mac OS) You can use this format to open an image in Photoshop 2.0 or to export an image to an application
supporting only Photoshop 2.0 files. Saving in Photoshop 2.0 format flattens your image and discards layer infor-
mation.
Photoshop DCS 1.0 and 2.0 formats
Desktop Color Separations (DCS) format is a version of the standard EPS format that lets you save color separations
of CMYK images. You can use DCS 2.0 format to export images containing spot channels. To print DCS files, you
must use a PostScript printer.
Photoshop EPS format
Encapsulated PostScript (EPS) language file format can contain both vector and bitmap graphics and is supported
by virtually all graphics, illustration, and page-layout programs. EPS format is used to transfer PostScript artwork
between applications. When you open an EPS file containing vector graphics, Photoshop rasterizes the image,
converting the vector graphics to pixels.
EPS format supports Lab, CMYK, RGB, Indexed Color, Duotone, Grayscale, and Bitmap color modes, and does not
support alpha channels. EPS does support clipping paths. Desktop Color Separations (DCS) format, a version of the
standard EPS format, lets you save color separations of CMYK images. You use DCS 2.0 format to export images
containing spot channels.To print EPS files, you must use a PostScript printer.
Photoshop uses the EPS TIFF and EPS PICT formats to let you open images saved in file formats that create previews
but are not supported by Photoshop (such as QuarkXPress®). You can edit and use an opened preview image just as
any other low-resolution file. An EPS PICT preview is available only in Mac OS.