"We've talked about Darktable before, because it is a wonderful advanced RAW photo editor and workflow manager. My current favorite feature is tethered shooting, which is connecting a camera to your computer and controlling it with Darktable. Obviously this is not very convenient for hiking or street photography, but for studio and tripod work it's the bee's knees." -- source: http://bit.ly/1jK1fdy Cheers, Peter -- Peter Reutemann, Dept. of Computer Science, University of Waikato, NZ http://www.cms.waikato.ac.nz/~fracpete/ Ph. +64 (7) 858-5174