I'm with Michael R; skipping over MF and using just 35mm and LF works well enough. A 4x5 negative can be scanned and printed if one doesn't want to invest in a 4x5 enlarger. Edward Weston sold 4x5 contact prints. The lightest 4x5 cameras are little larger than some MF gear. Film holders do quickly add to the kit, though. We tend to work slower and take fewer shots with the larger film.