From the article:
There’s some confusion as to what the RAW photo format actually is, and, like any good photographic fact, it can incite forum flame wars as quickly as the mention of the words Leica and Bokeh in the same sentence. Although it comes in various flavors – seemingly one for every different camera model – RAW is essentially the raw data from the camera’s sensor, hence the name.
If your camera has a RAW setting, you should be using it, no excuses. Here’s why….
Read the Full Article: Why You Should Be Shooting RAW