Before the Internet became available to everyone, I was a Sysop in the photography section on Compuserve. We did not have the opportunity to share images at that time and one of the frustrations was trying to explain the Wood Effect to those who had never used infrared film. It was difficult to have the reader visualize what happens when infrared radiation is captured by the camera. This resulted in my creation of the Postcard Trading List, where a group of us sent small prints to one another so that we could share what we were working on (a compilation of some of the prints I sent out can be found at Map of the World).
Last weekend I decided to go to Brunswick, MD to shoot pinhole sieve, but I also took my large format camera with holders containing both Kodak Tri-X and High-Speed Infrared. At one point I photographed four small trees in front of a train with both films. So for anyone who has been wondering about the difference since 1986, above are two side-by-side examples that should clarify things.