Changing Image Color Depth
You can modify an image's color depth in View mode. Color depth refers to the range of colors an image contains.
To Change the Color Depth of an Image:
In View mode, click Tools | Modify | Change Color Depth, and select one of the options described below.
Color Depth Options
Two-color black and white palette |
|
16 Grays |
|
256 Grays |
256-color grayscale palette |
16 Colors |
16-color palette |
256 Colors |
256-color palette (GIF format uses 256 colors by default) |
32,768-color palette |
|
16,777,216-color palette of all colors visible to humans |
|
16 bit grayscale |
16-bit grayscale palette |
48 bit color |
48-bit color palette |
You can use