What is the difference between camera resolution, pixel resolution, and print resolution?
Camera resolution is commonly expressed in “megapixels,” or millions of pixels. This simply refers to the maximum pixel dimension, or effective pixel resolution, that your camera is capable of generating. For example, if 2048 x 1536 is the highest pixel resolution on your camera, you are working with a 3.1 megapixel camera (2048 x 1536 = 3,145,728 pixels). Print resolution is commonly expressed as dpi (dots per inch) or ppi (pixels per inch). A standard print resolution is 300dpi (keep in mind that standards may vary among printers and organizations). Having an adequate pixel resolution is more important than having a particular dpi, because the dpi of any image can easily be changed in an image editing program without altering the original pixels. However, you cannot change the number of pixels (i.e. blow up an image) without potentially degrading the quality of the image. Keep in mind that since dpi is related to output (print) size, a change made to the dpi will proportionately adju
