I just received a roll of Kodak HIE, Konica 750 and EFKE IR820 Aura. I will most likely purchase some Rollei Infrared 400 and Ilford SFX 200 and shoot a whole series of landscapes with pure infrared films, using only a Hoya Red 25A, Hoya Skylight, Hoya R72 Infrared filter and a circular polarizer. Does anyone have any advice for any films listed? (ASA, filter combinations, filter compensation with stops, development with D-76, focusing adjustments, etc.) I have experience with EFKE IR820 Aura but I would like to hear what people with more experience have to say. Thanks to all, your advice is truly appreciated!