warning about color film fog
I have some old Fuji Super G+ 100 film that I had bought in bulk rolls years ago from Freestyle Photo. It was only $10 per 100 ft and I bought dozens and keep it in my freezer. It 'expired' in 1998.
The speed is still a full 100 and there is no fog. But... the sensitivity of this film to low Kelvin light (red, yellow, etc) is astounding. It took me a full year to discover just what was wrong with all the ugly green base I was getting all too often. To quantify this distress I offer the following. I really do not even expect all to believe me it is so sensational.
I have a surge protector under my work desk that has a red light on it. Certainly, if you bring an unexposed color film right next to it you will get fog. We all know that. But I tried something else to confirm my suspicions: I pulled an inch of the film from the cassette and held it six feet from the light for ten seconds. First, let me say that, at six feet from this red light you cannot see any white at all from a piece of copy paper, even after your eyes get accustomed to the 'darkness' for 15 minutes. It is THAT dark an environment.
I then, in TOTAL darkness pulled out another few inches and made one exposure in my camera and processed the few inches of film. I was amazed to find a THICK green cast over the part that was hand held six feet from the red light. What the eye cannot see is 'seen' by this film. The green cast stopped abruptly at the point where the film had still been in the cassette. I also did another experiment: in TOTAL darkness I pulled a few inches of this film from the cassette and placed the cassette into a new paper safe in perfect condition. I kept this paper safe in bright light for one week. After that time, again in TOTAL darkness, I pulled a couple inches of additional film from the cassette and made an exposure in my camera. After processing the film, again, at that point where I pulled additional film and made the camera exposure, there was a change: the camera exposure was perfect, orange base and picture, but the first 'exposure' where I left the blank film in the paper safe, had a light green cast throughout, ending abruptly where the cassette felt started. Photons had gotten INTO the paper safe. Only slightly, after a full week of bright light, but they had gotten IN!!!
Those used to using only B&W film be forewarned: color film, maybe only this special Fuji one in particular, has a hair like trigger that causes the couplers to react. Honestly, NO B&W film was ever THIS sensitive, even TMZ or DELTA 3200. It is truly amazing and took me one year to zero onto this.
I have tried this with various Kodak color films and they are not THIS sensitive. - David Lyga
Last edited by David Lyga; 12-21-2012 at 03:08 PM. Click to view previous post history.