Digital Cameras

What they do
These are cameras that are completely digital.
 
Quality to consider before purchasing one
1) Number of pixels (expressed as megapixels) not interpolated. The greater this number the greater the quality. 3 megapixels are the minimum to obtain decent results. If you can get anything greater than this, the better (of course do not even consider it when you read interpolated).
2) Quality of the lens. It is important to have good quality ones. You can have cameras with changeable lens (which can give you better quality) as it is for traditional cameras. Otherwise you can have cameras provided with an optic zoom or digital zoom (the latter is similar to having interpolated pixels, so it is best avoided). It is also a good idea to have a macro function (or similar) so that you can easily take pictures of small objects and details (such as flowers).
3)Colour display. This allows you to see immediately the picture that you have taken (therefore it is better to purchase only a camera that include it).
4)Memory. This is needed to store the pictures. Having a lot of memory allows you to takes more pictures before you download them on your pc and wepe the memory clean again. 128 MB are a reasonable size.
5) Dimensions. One of the great things about this cameras, is that they are very light (unless you buy a professional one) and can always be carried with you so that you can take pictures whenever you want, even in the most unexpected moments.
6) Batteries. If you can, try and get lithium batteries. They are a bit more expensive, but they can recharged many more times.
 
The cost of a digital camera varies a lot according to its characteristics (such as numebr of pixels). It can vary from 100 Euros to over 400 USD.
Brands to keep in mind (Digital Cameras sale)

Nikon, Pentax, Canon, Sony, Kodak, HP, Olympus (the first two mentioned come fore anything else).