For portrait photography on location I have assembled a portable studio.
Portable Portrait Studio Setup with a Nikon D7000 camera with 24-120mm f/4.0 lens, SB-900 Flash with a Orbis Ring Flash mounted on a Manfrotto Tripod. Plus two SB600 remote wireless flash on umbrellas and a Grey Patterned Backdrop. Portable Portrait Studio Setup fits in two camera bags, backdrop bag, lighting kit bag, tripod bag and misc items (Combs, Mirror, neck ties, etc.) in a duffle bag. Portable Portrait Studio Setup to take portraits of attendees at Charity and other events.
I am not sure if I can show my diagram but here is the URL.
Please post you comments, suggestions, questions or show us your portable studio.