At photography shows I’m frequently asked by pro photographers for support of tethered shooting in Lightroom–that is, the ability to have a high-end camera tethered to one’s workstation, and to have the images flow in as they’re shot. The good news is that what’s requested is largely possible already. London-based fashion photographer/author Martin Evening has posted a great intro to shooting tethered in Lightroom. [See also Martin’s overviews of the Lightroom Library and Develop modules.]
Photographer and author Ben Long has posted a Windows
version of his Adobe Camera Raw Version Control package. By duplicating and managing XMP settings files, this free set of
applications makes it simple to create and manage multiple versions
of the same raw document. This means you can
easily create multiple XMP files for the same image, and easily
switch from one to the other. Also check out the free (though donation-supported) Mac version.