Digital computers have revolutionized photo manipulation and retouching. What used to take hours of guesswork in a darkroom can now be done precisely on a computer nearly instantaneously.

• Contrast – The effects of contrast on photos.
• Desaturation – The right and wrong ways to convert color photos to black and white.
• Posterize – Coming soon
• Solarize – Coming soon
• Dodge & burn – Coming soon
• Using custom filters – A powerful but poorly understood feature of most graphics programs.
• Differences between GIF and JPEG image formats – Which format is best for images delivered over the web?