User Guide

Academic Courseware: Chapter 1

Joyce Ryan

A common trick used to save on file size is to lower the color resolution

of an image. Depending on the image, it can be hard to tell the

difference between an 8-bit image and a 24-bit image on the screen.

This TIFF file takes up 600 KB of storage space.

This GIF file takes only 60 KB of storage space.

Compare output colors

Let’s look at an image at different bit depths in Corel Painter

using the GIF file format.

1 In Corel Painter, open a new file, 100 x 100 pixels at a resolution of

72 ppi.

2 Set the paper color to pure red in the RGB values by setting the red

to 255 and the green and blue to 0.