I am taking a landscape photography class, and we are taking a trip to Maine for the first week of June to take photos. I am taking 3 cameras with me, a 35mm film slr, my DSLR, and a Deerdorf 8x10. Along with 100 sheets of 8x10 film, I also purchased a box of infrared 8x10 for the trip. I've never shot IR film before, so I need a bit of help with how to focus and expose. The film I've purchased is Efke 820. I have a red filter already as I sometimes shoot B&W through a red filter, but any help, advise, or links would be greatly appreciated.