There are some similarities among different cameras and that is what we'll talk about today. Choose a megapixel solution for better print quality. In the camera specifications, you should be able to find out the maximum image dimension that the camera is capable of taking. I have a SONY DSC-F1 and it is capable of 640 x 480 pixel images. Unless otherwise stated, you can assume that your camera is producing images at 72 ppi.
Some digital cameras are capable of taking pictures at variable resolutions.
I have used cameras with this option and they took pictures at 1024 x 768 at 72 ppi OR 640 x 480 at 72 ppi. Remember that the larger dimension allows you to increase resolution while decreasing physical file size. Some digital cameras allow you to preview the images you have already taken, while others do not. The preview feature is very useful. Once you have taken your pictures with a digital camera you will need to get them off the camera and onto your computer.