"In this article I'm going to show the benefits of storing the
photos in RAW 'format.' I'll be also decribing GNU/Linux tools that
can help you with processing such images.
"I framed the word 'format' with quotation marks on purpose,
since it's not a particular way of saving an image; it is rather an
umbrella term for many formats, implemented by digital camera
manufacturers in their products. Nikon makes use of the nef format
with partially hidden info about correction curves, Fuji has its
raf format, etc..."