PostScript Raster (Encapsulated PostScript). These files are used primarily on PostScript printers. These printers usually offer more variety of fonts and higher resolution than standard laser printers. EPS files will work on any PostScript compatible printer and any end-user application that supports placement of EPS files in its work space.
The image that you read from an EPS file can be a PostScript image, a PostScript raster image, an embedded TIFF image, or an embedded WMF image. The image that you write to an EPS file is always a PostScript raster image.
For a PostScript image, you can read the following bits per pixel, using various DPI options: 1, 2, 4, 8, 24.
For a PostScript raster image, you can read the following bits per pixel: 1, 8, 24.
For an embedded TIFF image, you can read the following bits per pixel: 1, 4, 8, 16, 24, 32.
For an embedded WMF file, you can read the following bits per pixel: 24.
You can write an 8-bit PostScript raster image, which is grayscale.