|MadSci Network: Computer Science|
Your full question isn't coming through, but I will give you a brief summary. Resolution is how small an object you can see when you are trying to differentiate items in a picture. Think about looking at a ruler. If you can make out where the inch markings are and they aren't blurry, the that's your resolution. Now, that seems kinda silly, but imagine if your ruler was marked down tot he 1/64th of an inch. Do you think you could distinguish between those marks? How about 1/32nd? The resolution will depend on a lot of things, but mainly the number of megapixels you have. Each megapixel contains different information (colorwise) and the more you have, the better your picture is going to be. This is entangled with the color scheme of the camera, if each megapixel only reads black or white, then you will have less resolution than if it registers 8 shades of gray, or 64, and so on. And then add color tot he mix and you have a whole lot more options. DPI, or dots per inch, refers to the fineness your printer will be able to show when you are trying to print the picture out. A pretty descent website you can check out: http://www.digicamguides.com/ It will walk you through if you are in the buying mode.
Try the links in the MadSci Library for more information on Computer Science.