The larger the megapixel rating, the better the quality of prints. Some digital cameras won't let you, others require special lens adapters. Look at advertisements, visit manufacturers' sites and separate the hype from the facts. Compare similar products, study specifications, determine whether it will work with your computer system, learn when the camera was introduced and determine whether it's about to be discontinued. The more reviews you read, the better educated you'll become.
Different writers pick up on different things.
Here are four excellent digital imaging product review sites like Steve's Digicams, Digital Camera Resource Page, Digital Photography Review, and the Imaging Resource. Don't forget to read consumer reviews at the various consumer sites. Recognize these review sites accentuate the positive and try to steer readers into buying from a specific retailer. Don't fall into the trap. Compare prices for several reputable retailers, such as those listed in the ACE Index .