135 or 4x5? I use both. When I load my 35mm all I do is go somewhere that has a low light level. Under a tree or in a bathroom/bar. anywhere that has a low light level. For my 4x5 I load it in "TOTAL" darkness. My darkroom. It can be loaded in a bag but if you touch the emulsion with your fingers or hand it will leave oils that will be very apparent on the developed film and subsequent print. James(posted 9022 days ago)