For the last couple of years, I have been fooling around (not making a living at photography makes that easy) with an old (for digital) Olympus 2020 2.1 Mp digital viewfinder camera. I got it after reading about how well it worked without modification simply by adding a Hoya 72 IR filter to it. A side note. I can also do IR work with my Sony S75 but a tripod is required where as the Olympus can be hand held. Here is one of my early pictures taken with the Olympus and a Hoya 72 filter. The flowers were dark purple to my eyes. I never saw the ant until I had the image on the computer screen. Recently I have been trying out the same filter on a Yashica Lynx 14e using Kodak HIE IR film. Seems to me that using a RF and opaque to visable light IR filters is a natural. I find that Kodak HIE is about 4 stops faster with the same filter than using the Olympus. Is any one else using IR film with their range finders? What do you think?