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ADOBE PHOTOSHOP CS2
User Guide
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.
Note:
EPS TIFF format and EPS PICT format are more relevant to earlier versions of Photoshop. The current version of
Photoshop includes rasterization features for opening files that include vector data.
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.
Cineon format
Developed by Kodak, Cineon is a 10-bits-per-channel digital format suitable for electronic composition, manipu
lation, and enhancement. Using the Cineon format, you can output back to film with no loss of image quality. The
format is used in the Cineon Digital Film System, which transfers images originated on film to the Cineon format
and back to film.
Filmstrip format
Filmstrip format is used for RGB animation or movie files created by Adobe Premiere®. If you resize, resample,
remove alpha channels, or change the color mode or file format of a Filmstrip file in Photoshop, you won’t be able to
save it back to Filmstrip format. For further guidelines, see Adobe Premiere Help.
GIF
Graphics Interchange Format (GIF) is the file format commonly used to display indexed-color graphics and images
in Hypertext Markup Language (HTML) documents over the World Wide Web and other online services. GIF is an
LZW-compressed format designed to minimize file size and electronic transfer time. GIF format preserves trans
parency in indexed-color images; however, it does not support alpha channels.
IFF
IFF (Interchange File Format) is available through an optional plug-in. It is a general-purpose data storage format
that can associate and store multiple types of data. IFF is portable and has extensions that support still-picture, sound,
music, video, and textual data. The IFF format includes Maya IFF and IFF (formerly Amiga IFF).
