I don't have access to an official gel camera, but I need to get publication quality pictures of a coomassie stained SDSPAGE. I do however have access to a decent SLR camera and a tripod. Are there places people buy white plastic to provide a decent background for imaging their gels? Or are there flat bed scanners (that aren't expensive) that people can recommend? Or what other clever "home made" methods do people use to capture images of their gels?