Resolution
Resolution is measured in megapixels. The higher the megapixels, the sharper and more detailed the pictures your digital camera can take, and the bigger you can enlarge them without losing the sharpness of the image. 3.1 megapixels and higher is usually considered sufficient for print-quality photos. Photos with a resolution of less than 3.1 megapixels are best viewed only on computers
bandwidth
Definition:
Web bandwidth refers to the maximum speed at which content can streamed to individual users over the Internet. The speed of an individual bandwidth is dependent upon the modem that is accessing the content as well as the speed of the web service that is distributing the content.
It is suggested that personal users have at least a 700kbps bandwidth to accesses web video.