You can use the Heliopan RG715 IR filter for optimum 'wood' effect for this film. It will be iso 12-25 with this IR (#88A) filter (5-F stops).
Without filter the film reacts like regular panchromatic films but it has a high resolution (lp/mm). With a regular (dark) red filter you will have a dramatically effect but no IR.
OK... one more question....
These filters of which you speak- I'm having a hard time finding them. I usually shop at KEH. I know I need a B50 size filter, but I don't really see them in their Hasselblad/filter section. If I meander around their site, I can find B50 red and yellow and green (which I have...), but as far as a B50 IR filter- no luck. Are you'se guys familiar with this site??? Can someone point me in the right direction???
Also square format: Yashica Mat 124-G and Rollei IR 820/400. 1/30S F=4,0 handheld. E.I. 12 and a Bay I RG715 Heliopan filter.
If you want to preview "infrared effect" before shooting, here is a trick : some digital P&S cam sensors are somehow sensitive to IR light (not all - you may check if yours is, by pointing a TV/recorder IR remote control toward it and watch if you see a "light" on its screen).
So, if your digital P&S is "seeing IR", set it on highest ISO, put your IR filter in front of its lens and shoot : you will get an image in improbable false colors, and get an idea of the IR effect you might get on your IR film with your IR filter - for the subject you intend to shoot, especially in the "greens" (trees, grass, etc.) that will appear with very light colors.
Here an example :
I have a brochure on the film that Rollei gave me. I send it out whenever someone purchases a roll of film.
It goes over the basics of using the film. If you want one send me your mailing address and I'll mail it out.