Gast
:ph34r: Hello,
Good evening, everyone! I’m new here, but I’ve had a look around to see if anyone else has had the same problem. Didn’t find anything. My trusted black-and-white photography shop pointed me in the direction of your forum. (Thanks!)
So, I ran two rolls of Fomapan R 100 one after the other through the Fomapan chemistry (exactly according to the instructions, prepared for one roll; I figured nothing would go off in such a short time) – I had no problems with cross-exposure on the first roll either (as described elsewhere). In other words, film 1 turned out wonderfully (perhaps a tad too dark, but that’s fine). :D
With film two, there was a problem with cross-exposure at that point (which, according to this forum post, doesn’t seem to be one): my second old Triplex can no longer has a clip, so the film, along with the plastic spool, becomes quite brittle to handle. In short, instead of 2x30s, the film was certainly exposed to light (halogen spotlights, ~50W, approx. 2.5m away) for 1x240s. It turned out as it had to: in the end, the film was black. However: there are two shades in the emulsion: brown and black. Brown at the start of the film and in the images. Black at the edge of the film and between the images. When I look at the film through the transparency sheet with a light source from my viewing angle, everything looks almost perfect. It’s just that you can’t see right through it. The emulsion that should have been removed or made clear hasn’t been removed. This now reflects incoming light and allows me to view my slides using the ‘reflected light method’. Oh dear, the damage is beyond description... <_<
An employee at FOTOIMPEX suggested that the clearing bath containing potassium permanganate was probably no longer fit for purpose in terms of time or consumption. That may well be the case, as it no longer had its purple colour but had already taken on a brownish hue after the first film...
Now to my question: In the current state (after all, the film is fixed and has long since dried), is there still a chance of removing the unwanted emulsion? (in such a way that the film content isn’t damaged; there do seem to be two distinct emulsions on the base) If so, how? Thanks for any tips! (I’m prepared to cut the film up and will keep some test snippets handy for experimenting)
Regards, Jense
PS: I would have posted this in the first forum, but I saw two Fomapan R 100 posts here... So, herd instinct.
MirkoBoeddecker
Jense,
I’m going to move your thread to the general forum – it’s better suited there.
I can only agree with what my colleague has already said: the Bleach bath is dead.
The bleach bath should only ever be prepared at the very last minute. That’s why it comes packaged in so many small sachets.
You could try re-bleaching. Using a test strip, go through all the steps of the bleaching process again from the start.
It might work. But that’s just a gut feeling and hasn’t been tested yet.
Regards,
Mirko
