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>>151617 RAW is the raw sensor data straight out of the chip with no processing done to it at all. Processing like, for instance, applying the white balance or vibrancy settings and so forth to the picture. If you shoot JPEGs, you have to make sure that you have an appropriate white balance for your shot set beforehand. If you shoot RAW, you never have to worry about it.
Additionally, RAW gives you a couple extra stops of leeway on your exposure because the sensor records more data than can be stored in a JPEG.
Finally, no quality hit from JPEG. Whenever you open, edit, and resave a JPEG, it loses a little more quality--after three or four rounds of this, it'll look like ass. With a RAW, you're always starting from a pristine copy.
(That last isn't a huge advantage if you shoot best-quality JPEGs, but the others are)
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