Epson PhotoPC 500 User Manual page 79

indexed color image to this type for editing purposes.
The image will appear the same, but you will be able
to use all of the PhotoPC 500 features with it.
Below is an example of an image that was originally
converted from 24-bit color to 8-bit grayscale and then to
1-bit black-and-white.
8-bit grayscale
See page 6-7 for information on printing your converted
images.
7-12 Editing Photos in PhotoPC 500
1-bit black-and-white