I've been dealing with my chamonix and it's non-infrared proof bellows the last few days. Nearly every infrared image I've shot with that camera has been a dud due to fogging. I figured thought this kodak HSI was no good so I opened another box and had the same results. I won't be using the chamonix for ir work unless they send me a new bellows. I'm pretty excited that this film is still good.