Many modern "Miniature"cameras are as big and heavy as M/F cameras http://www.jafaphotography.com/images/eq/f6hs.jpg, if you read photographic literature from the 1930s M/F was considered to be a miniature format in those days, IMO the bottom line is if you want the photo-technical quality that 120 film is capable of you have to "Suffer for your Art" and lug the stuff about.