BMP Windows Bitmap format that originated with Windows Paint. This
24-bit format is still used as wallpaper within Windows. Images can
be saved in Windows or OS/2 format, an older operating system
format from IBM. In Windows, this format uses the .bmpextension.
Photoshop EPS The Encapsulated PostScript (EPS) format is used to share images
with page-layout software such as FrameMaker, QuarkXPress, and
Adobe InDesign. EPS format can include “clipping paths,” which
are often used in page layout software to flow text around an
image. EPS format images must be printed on PostScript-capable
printers. In Windows, this format uses the .epsextension.
PCX An older format created for the DOS program PC Paintbrush. Clip
art is still found in this format, but the format is not current with
today’s printers and software and should not be used. In Windows,
this format uses the .pcxextension.
PICT An Apple Mac OS image format that bridges compatibility between
graphics and page-layout applications. Enables color RGB images
to be saved in 16-bit or 32-bit format. This format is not supported
very well in Windows. In Windows, this format uses the .pctexten-
sion.
PNG A royalty-free alternative to the GIF format that is lossless, supports
24 bits (instead of GIF’s 256-color palette), and antialiased back-
ground transparency. PNG supports RGB, indexed color, and
grayscale images. In Windows, this format uses the .pngextension.
Scitex CT Scitex Continuous Tone (CT) format is used by high-end Scitex
(Kodak Versamark) color printers. In Windows, this format uses the
.sctextension.
TIFF The Tagged-Image File Format is a common format for photogra-
phers, and is common among many applications. This lossless for-
mat can be compressed using LZW or ZIP compression, and retains
channels and layers in CMYK, RGB, and grayscale format (LAB
mode loses channels). Most scanners generate TIFF images. In
Windows, this format uses the .tifextension.
Photoshop for the Mac and PC also includes these formats:
■ Photoshop DCS 1.0. Desktop Color Separations format created by
QuarkXPress for separations. This format is commonly used when work must
be imported into QuarkXPress, Adobe InDesign, PageMaker, and
FrameMaker. In Windows, this format uses the .epsextension.
■ Photoshop DCS 2.0. An updated Desktop Color Separation format that
enables CMYK images to contain a single alpha channel and multiple spot-
color channels. In Windows, this format uses the .epsextension.CHAPTER 7 FILES AND FILE FORMATS 83File Format Purpose