I just acquired some Kodak HSI Infrared for use in my 4x5 Tachihara field camera. The previous owner advised me that some camera bellows will transmit infrared and fog the film. I was advised to do a test sheet with the dark-slide opened halfway to see if film fogging occurs.
Since I've never used infrared film before I would be interested to hear others' comments on this phenomenon. My Tachihara is about a year old and the bellows of course is light-tight at visible wavelengths.
Thanks to anyone for comments. Cheers,