Actually there are several infrared black and white films on the market.
Kodak HIE High Speed Infrared film may be the best known. I used this film several years ago. But as it exists only in format 135 or sheet film, I had to find something else to use infrared in medium format cameras.
The Kodak HIE has a good speed, but it is very grainy; the film can only be loaded and unloaded in total darkness. There is no anti-halation layer, so the bright spot (especially Wood-effected subjects) get a rather special radiation affect, that sometimes fits well, but may be found disturbing on other occasions.
So I came to Konica Infrared 750nm and was quite satisfied. It has finer grain, is easier to use as it may be loaded into the camera under normal daylight conditions, but the film is really very slow.
I'm working at a film speed of 15 ISO (15 ASA), but with Neofin Blue developper it comes fairly well. The fact that you don't need the "black" infrared filter but only normal black&white red filter allows easier shooting sessions, although the slowness of the Konica Infrared implies the use of a tripod.
Recently I tried the Macophot Infrared 820c. Some of the Shannon photographs have been made with this film, and I think it's well worth to try it.
The Maco film has a slightly better ISO rating ( approx. 50 ISO), but is a lot more sensible to light under all conditions, so Maco recommends to load and unload the film in total darkness, what seems at least to be difficult with 120 format rolls. But if you avoid full light, you'll find that the results will be okay; sometimes you'll have some millimeters fogged at the film edges, but even so the negatives will give excellent prints ( with some extra darkroom work, of course). The film works best with an real infrared filter (I used Heliopan 695), so you'll have to position your cmera first before screwing the filter. Development in X-TOL by Kodak happened to give very acceptable negatives ( 1 part stock + 2 parts water - 21°C - agitation all over the first minute, then every 30 sec., total developping time being 20 minutes) . The film has very fine grain, and, being about two spots faster than the Konica, enables the same quality. It was very astonishing to me that even very thin negatives remained printable. Some of these will be on the Finland page of this site in before end of October.
I've never tried the Ilford SFX 200 film, as tests in different magazines seem to prove a rather poor Wood effect (i.e. the whiteness of the fresh leaves and grasses).
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