I had this crazy thought about sheet film development in the field. I liked the type 55 film a lot, but since it's not longer available I've been looking for ways to obtain the same results (a negative to look at within minutes). So I keep having this crazy thought about developing the sheet film IN THE HOLDER (obviously a plastic one). Imagine a box with slots for film holders which contains tanks for the developer, fixer, wash, etc, a battery, small pump (to move the liquids and to agitate the water), and maybe even a thermostat if there is AC available. Maybe even a fan to dry it. Shoot the film, remove the holder from the camera, insert the holder into the device, pull the dark slides, press a button, 5-10 min later, negative. So, anyone sees any reason developing the film in the holder would not work? I assume I would have to change the light seals to something like rubber, but other then that a plastic holder should be ok, right?