"What is the use of a digital camera if you cannot import
the images for future storage on a computer? Problems arise when
digital-camera manufacturers do not release their communication
protocols, and developers have a much harder time developing
software for non-proprietary operating systems. Fortunately,
recently some manufacturers have released specifications and
developers have hacked up communication protocols. Having said
this, here is the equipment you will need in order to start playing
around with digital photography in Linux...."
"Usually digital cameras are connected through the serial port
interface. One can easily get drivers so that their programs can
support communications through the USB port. Some drivers can be
used for a variety of other cameras that share the same protocols.
This is convenient if you cannot find a specific driver for your
own digital camera. One can also download the kernel patches that
include support for various new cameras."