The term resolution has many different definitions. In terms of photo printing, resolution refers to the detail involved printing an image. High resolution images are generally 300 DPI or higher, and provide excellent image detail. Low resolution images, or images with a low DPI, tend to have less detail and may sometimes appear blurry or distorted when printed. The best way to ensure that your image will be high resolution is to use a camera with 3 or more megapixels and to set it at the highest quality setting available.