wow - this would be more than perfect as i already have way to much gear to lug around (landscape gear has to come too) - i'll let ya know in a few days if i can get similiar results from the domes/extensions i have - this has been very helpful - i have one smaller dome - measures 6" across - guessing it's the dp60? i have an extension for it - which lens do you think i'd have the best luck w/ canon or sigma / 100mm or 105mm? - the minimun focus ranges from 5.9" to 12.2"(105mm) - i don't quite understand the focus distance/virtual image thing but i assume one of these has a better change of working?