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Photo Forum / Film Photography / Darkroom / February 2004Dooooole How Stuuupid can I -b
Well I did something really dumb today, was processing in the Jobo and I lifted the lid off before fixing my film. One thing I can attest to now: is that PMK does mask or block light, as the negative looks perfect now that its fixed.  SignatureLF website http://members.bellatlantic.net/~gblank > Well I did something really dumb today, was processing in the > Jobo and I lifted the lid off before fixing my film. One thing I can > attest to now: is that PMK does mask or block light, as the negative looks > perfect now that its fixed. > -- > LF website http://members.bellatlantic.net/~gblank You know, don't you, that when you fall in excrement and come up smelling like a rose, you're not supposed to let on like it ever happened? > > Well I did something really dumb today, was processing in the > > Jobo and I lifted the lid off before fixing my film. One thing I can [quoted text clipped - 5 lines] > smelling like a rose, you're not supposed to let on like it ever > happened? I only know this because my cat told me. > > > Well I did something really dumb today, was processing in the > > > Jobo and I lifted the lid off before fixing my film. One thing I can [quoted text clipped - 8 lines] > > I only know this because my cat told me. Indeed, cats are expert at this behavior. They look at you as if to say "Surely you don't think I could be clumsy enough to knoct that beautiful vase off that shelf." > Well I did something really dumb today, was processing in the > Jobo and I lifted the lid off before fixing my film. One thing I can > attest to now: is that PMK does mask or block light, as the negative looks > perfect now that its fixed. With luck like that, can you give me some numbers to play in the PowerBall Lottery??? > Well I did something really dumb today, was processing in the > Jobo and I lifted the lid off before fixing my film. One thing I can > attest to now: is that PMK does mask or block light, as the negative looks > perfect now that its fixed. Actually I don't think it is the developer. If the development was stopped, either with the usual baths or plain water, fogging due to light exposure should be minimal. I have done the same thing with sheet film - not thinking well, mistakenly threw the wrong switch - should have been the timer - just prior to immersion in the fixer bath. It is true that film (and paper) will stain and discolor if exposed too long prior to fixing, but if that exposure is limited to fractions of seconds, very little deleterious effects will be realized. HOWEVER, that should not indicate the advocating of sloppy techniques. Truly, dr bob. > Well I did something really dumb today, was processing in the > Jobo and I lifted the lid off before fixing my film. One thing I can > attest to now: is that PMK does mask or block light, as the negative looks > perfect now that its fixed. I read once that developer has a noticeable desensitizing effect on unexposed silver halide. This probably bought you some leeway when you opened the tank. The first time I developed E6 (in the kitchen sink) the tank lid popped off as I was washing the film between the first dev and colour dev steps. No ill effects in the end, the slides turned out great. :) Jordan > > Well I did something really dumb today, was processing in the > > Jobo and I lifted the lid off before fixing my film. One thing I can [quoted text clipped - 10 lines] > > Jordan In the old E-4 process, between the first and second developer, you actually had to expose the film to a bright light to 'reverse' the image (at least with Unicolor kits). I remember having a 500 watt photo flood for this purpose. Now, I believe this reversal is done chemically. May be why the E-6 process showed no ill effects... > In the old E-4 process, between the first and second developer, you actually > had to expose the film to a bright light to 'reverse' the image (at least > with Unicolor kits). I remember having a 500 watt photo flood for this > purpose. Now, I believe this reversal is done chemically. May be why the > E-6 process showed no ill effects... Yup, E-6 does chemical reversal using a tin compound. I've been playing a lot with B&W in the last few weeks (not sure if I'll continue) and have been doing light reversal. I actually managed to "print out" the positives with light that was too bright. It gave an interesting effect -- solarized slides, as it were. Jordan And this may be the explanation - it takes a lot of light to 'expose' a developed film (500W flood, daylight, etc) Jorge >> Jordan > [quoted text clipped - 9 lines] > <><><><><><><> The Worlds Uncensored News Source > <><><><><><><>< : Well I did something really dumb today, was processing in the : Jobo and I lifted the lid off before fixing my film. One thing I can : attest to now: is that PMK does mask or block light, as the negative looks : perfect now that its fixed. I've heard that exposing film to light prior to fixing but after the stop bath won't cause any problems. It has something to do with the fact that you did indeed "expose" the film but since you didn't redevelop the film it had no effect on the negative. I've always been to chicken to try it and see if it actually works though. :-) As to the stupid mistake part at least you got usable negatives after your mistake. When I do something stupid I end up with nothing but clear plastic or horribly fogged film. SignatureKeep working millions on welfare depend on you ------------------- fwp@deepthought.com >: Well I did something really dumb today, was processing in the >: Jobo and I lifted the lid off before fixing my film. One thing I can [quoted text clipped - 10 lines] >mistake. When I do something stupid I end up with nothing but clear plastic >or horribly fogged film. This would only work with an acid fix and/or acid stop bath. Beware trying to pop the tank lid too soon using a water rinse and an alkaline fixer with a fairly active developer like Rodinal. I fogged two rolls of film finding that out after using an acid fix for years and never seeing any difference. >Keep working millions on welfare depend on you >------------------- >fwp@deepthought.com > This would only work with an acid fix and/or acid stop bath. Beware > trying to pop the tank lid too soon using a water rinse and an > alkaline fixer with a fairly active developer like Rodinal. I fogged > two rolls of film finding that out after using an acid fix for years > and never seeing any difference. Had I not been using PMK or another Pyro developer I doubt it would have been a happy story. SignatureLF website http://members.bellatlantic.net/~gblank > Well I did something really dumb today, was processing in the > Jobo and I lifted the lid off before fixing my film. One thing I can > attest to now: is that PMK does mask or block light, as the negative looks > perfect now that its fixed. Probably not so much from the stain image as from desensitizing. All developers tend to desensitize the film as it developers. Pyro developers are noted for this which is one reason they were popular for inspection development. Signature--- Richard Knoppow Los Angeles, CA, USA dickburk@ix.netcom.com |
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