The Konica IR film is much finer grained than Kodak HIE. It is available
in 35mm and 120. It can be a bit hard to find, I believe Calumet sells it
mail order.
It can be loaded in "subdued" light (I would suggest quite subdued, not
just turning your body away from the sun to make a shadow). It is about EI
12 for film speed (with a #25 filter). I usually bracket at 1/8 and 1/15
at F16 in full sun with the red filter. Konica's development instructions
seemed rather excessive, I used about 20 or 25% less time than they
suggested (and I have a cold light on my enlarger!).
I like the Konica better than HIE, it is bit less extreme (I believe that
means it records less into IR than HIE). Unfortunately its slow speed
almost requires a tripod.
tomf2468@pipeline.com (Tom Ferguson)