This is the film I plan on starting with for infrared wedding and portraits. It's Konica B&W Infrared film. Here it's used in a Mamiya 645, 70mm lens and with a Red #29 filter in place. I have been shooting this film at ISO 6 with the 4 stop loss taken in to account, but my negs are a bit contrasty and dense. I have been developing it just like Kodak Plus-X and I plan on closing down two stops next time I shoot it.