There's a multitude of emulsions available, even after a lot of them have been discontinued. Each one reacts a little differently to light, both in terms of requiring more or less light, but also in terms of reacting in various unique ways to light.
Kodak IR film is gone, for real this time
Kodak announced that they are dropping EPR, EPN, and HIE in december.
Stockpile Stewardship
I talk a little about my stockpile of discontinued film.
Dona playing in the creek
Dona playing in the creek, with the funky colors from Ektachrome IR color infrared film.