I've never shot infrared film before and I'm barely familiar with my Mamiya 7ii that I purchased about 6 mos. ago. Anywho - I'm taking a class at the local community college and one of the assignments is to shoot with infrared film. From what I understand, you have to load IR film in a darkroom. From watching this youtube video: http://www.youtube.com/watch?v=mVEX9CgWC0o It looks like you have to align arrows on the film back with an arrow on the camera body. Not sure how you would accomplish that in total darkness. Anyone out there use Efke IR820 aura 120 film, or any type of IR film?