Size

• An 8-megapixel picture is 3264 x 2448 pixels when taken at its full resolution. A 10-megapixel picture is 3872 x 2592 pixels when taken at its full resolution.
  
  

Effects

• At 300 ppi (pixels per inch), which is the resolution typically required for magazines and print media, you can print an 8-megapixel picture 10.88-inches by 8.16-inches. You can print a 10-megapixel picture 12.91" x 8.64" at its highest resolution.
  
  

Indentification

• A digital camera will typically have its megapixel printed on the camera body. Most digital cameras will also allow you to adjust the camera's megapixel within the menu. If you purchase a 10-megapixel camera, you can often adjust the cameras settings to take pictures at an 8-megapixel resolution if you'd like.
  
  

Considerations

• In addition to allowing you to print larger photographs, a higher resolution picture can allow you to crop pictures more heavily and still have a high resolution photograph you can print out. Since digital pictures are made up of thousands of tiny dots, cropping a lower resolution picture may spread those dots too thin, allowing you in some cases tp physically see the individual dots in your picture. Typically cropping portions of a 10-megapixel picture will leave a much better-looking photo than cropping the same picture taken at an 8-megapixel resolution.
  
  

Memory

• The larger the megapixel of your camera, the more room your pictures will take up on your memory card. An 8-megapixel camera will be able to hold 800 pictures on a 2GB memory card, a 10-megapixel camera however will only be able to store 650 pictures on the same memory card.