What is a changing bag for?
A changing bag is a large, light-tight bag that looks kind of light a coat that was sewn shut. You put the film and the developing tank into the bag and zip it shut, then put your hands into each of the armholes. You can then open the film and load it into the tank. These are very convenient for people who dont have a regular darkroom, or if you want to develop in the field, or you have a jammed camera and need to get inside of it away from your darkroom. Here is a page on making a changing bag.
