Adobe illustrator 10 Manuale Utente

Pagina di 431
 | 
Back
329  
Adobe Illustrator Help
Saving and Exporting 
 | 
Back
329  
In addition to the PostScript language representation of the graphics to be placed, 
many EPS files contain a bitmap preview of the graphic that the application can display. 
EPS files intended to be used by Macintosh applications, for example, can contain PICT or 
TIFF images for screen preview; those intended for use by Windows applications contain 
either TIFF or Windows Metafile bitmap images.
Not all applications that create EPS files create preview images, however. When you place 
an EPS file without a preview image, Illustrator displays a box with an “X” to represent the 
EPS artwork. For more information on importing and exporting EPS files in Illustrator, 
see 
.
Enhanced Meta File (EMF) format The Enhanced Meta File format is widely used by 
Windows applications as an intermediate format for exchanging vector graphics data. 
Illustrator may rasterize some vector data when exporting artwork to EMF format.
Filmstrip format (FLM) The Filmstrip (FLM) format is an image-editing format used 
primarily by the Adobe Premiere and Adobe Photoshop applications. FLM organizes 
images into a long vertical strip containing numbered frames as well as the Society of 
Motion Picture and Television Engineers (SMPTE) time code. 
Macromedia Flash format (SWF) The Macromedia Flash format is a version of the 
Macromedia Flash Player vector-based graphics format for interactive, animated Web 
graphics. You can export artwork to the Macromedia Flash format for use in Web design, 
and view the artwork in any browser equipped with the Macromedia Flash Player. 
GIF format Graphics Interchange Format (GIF) is the file format commonly used to 
display indexed-color graphics and images over the World Wide Web. GIF is an LZW-
compressed format designed to minimize file size and electronic transfer time. The GIF 
format supports binary transparency by allowing one of the indexed colors to be fully 
transparent. GIF does not support partial opacity as found in an alpha channel. 
JPEG format Joint Photographic Experts Group (JPEG) format is commonly used to 
display photographs and other continuous-tone images over the World Wide Web. JPEG 
compresses file size by selectively discarding data. Because of this, JPEG compression is 
referred to as lossy. JPEG format does not support transparency.
Note: Artifacts, such as wave-like patterns or blocky areas of banding, are added to a file 
each time you save the file as a JPEG. You should always save JPEG files from the original 
image, not from a previously saved JPEG.
A JPEG image is automatically decompressed when opened. A higher level of compression 
results in lower image quality, and a lower level of compression results in better image 
quality. In most cases, the Maximum quality option produces a result indistinguishable 
from the original. 
PCX format PCX format, established by Z-Soft
®
 for its PC Paintbrush
®
 software, is 
commonly used by IBM PC-compatible computers. Most PC software supports version 5 of 
the PCX format. Version 3 files do not support a custom color palette. For this reason, 
when you open a version 3 PCX file in Illustrator, the palette is ignored and a standard VGA 
color palette is used instead. 
Portable Document Format (PDF) The PDF format is used by Adobe Acrobat, Adobe’s 
electronic publishing software for Mac OS, Windows, and UNIX. You can view PDF files 
using the Acrobat Reader software included on your Adobe Illustrator CD.