Below is a brief explanation taken
from Wikipedia of some terms used in comparing photo file types. I have
included it to assist in providing an explanation of the file comparison chart
included here. There are two types of image file compression processes: lossless and lossy.
Lossless compression processes reduce file size while
preserving a perfect copy of the original uncompressed image. Lossless
compression generally, but not always, results in larger files than lossy density.