 Megapixels make up all the pictures you take with your camera. They are lots of individual dots and each dot equals one pixel. A megapixel equals a million pixels. If you have a 10 megapixel camera, you'll get 10 million pixels. On a smaller image, you can't really tell the difference between the amount of pixels. If you wanted a big printout of that nice family snap, then a camera with a lot of megapixels would be better.