DPI
Definition:
DPI stands for dots per inch and is a common term used to describe the quality of a printer. If you can imagine that a printed character on a page is made up of many tiny dots, the more dots used to create that character, the better the resulting character will look. DPI describes how many of these dots can fit into one inch of a document. The higher the DPI the better the quality of the printed document.
Here's a word you may not know...
optical zoom
Optical zoom refers to using your digital camera to zoom in on, or magnify, your subject. The amount you are allowed to zoom is usually indicated by a number followed by an x such as "3x optical zoom" which in this case means the ratio of the longest to shortest focal length on the digital camera lens is 3:1. Optical zooming uses the digital camera's lens to perform the zoom which produces a far superior picture than optical zoom's counterpart, digital zoom.
