Graphics Programs Reference
In-Depth Information
acceptable. GIFs use a color
table (with no more than 256
colors total, not per channel)
to represent the image. This
can lead to a small file size but
also banding in the image. If
you need transparency in a
web graphic, GIF is one of two
choices (the other is PNG).
There are also animated GIFs,
which are GIF frames displayed
one after the other to create
animation. Unless you need
transparency or animation,
JPEG is a better option for
web delivery.
Compare a JPEG (left) and a GIF (right). Notice how the GIF uses fewer colors.
This format can reduce file size but often creates banding or color shifts.
Photoshop EPS (.eps)
Layers
8-bit
16-bit
32-bit
Bitmap
Grayscale
Duotone
Indexed Color
RGB
CMYK
Lab
Multichannel
The Encapsulated PostScript (EPS) language
file format can contain both vector and bitmap
graphics. It is nearly universal 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 that contains vector graph-
ics, Photoshop rasterizes the image.
You can embed an image preview into an EPS file, which
makes previewing your image easier in a page-layout
program.
