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> New user - Hi all! - with film processing probs.. |
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#31
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I have processed hundreds of film over the years without paying any special attention to the wetting agent afterward. In that time the fault has happened three times. The tell is when you take the top off the tank if it has bubbles in there then it is wetting agent.
In the run up to the first time the neg's had this fault I noticed there were bubbles in the top of the tank. I think I mentioned it in another thread some years back.
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Mitch http://photomi7ch.blogspot.com/ If you eliminate the impossible whatever remains no matter how improbable must be the truth. |
#32
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I wonder when Tedward's jpg will get approval? Seeing it might help us give more useful comments
Mike |
#33
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Here are two photographs I printed from the contaminated negatives.
http://www.film-and-darkroom-user.or...php/photo/2070 http://www.film-and-darkroom-user.or...php/photo/2069
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Mitch http://photomi7ch.blogspot.com/ If you eliminate the impossible whatever remains no matter how improbable must be the truth. |
#34
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Interesting! Those two links look remarkably like the problems I've been having with mine Mitch....
Looks like my pix are not going to be 'approved' does it. Not sure what the point of having the upload facility if it can't be used! Does this forum accept dropbox links?? If it does, then here is the film I developed yesterday on dropbox. Some frames came out quite well - Fuji Acros 100 film - No sign of the issues I've been having. Link: https://www.dropbox.com/sh/55ia6k28b...DeEvxjqMa?dl=0 |
#35
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Sorry guys, missed the earlier attachment. Not sure why it needed approval though.
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#36
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Quote:
If an image is not approved it just means that the file size is to big. re-size it to 600 pixels on the longest side it should then up load. As far as I am concerned it is wetting agent contamination.
__________________
Mitch http://photomi7ch.blogspot.com/ If you eliminate the impossible whatever remains no matter how improbable must be the truth. |
#37
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Quote:
If you can be sure there were no changes to the process and the only difference was Fuji Acros then it looks as if the FP4+ might have been the issue My record is stuck in the same groove now but I'd send the negs to Ilford and insist on a reply. Ilford takes its QC seriously and if there is any chance that the FP4+ was defective in any way I am sure Ilford would want to know about it Mike |
#38
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I agree with Mike, send the FP4 to Ilford quality control, they take it very seriously indeed, and that is the only way you canget a definative answer, I also took a look at the dropbox liknk and if the portraits are the correct photos then to my eyes they are fine, and in my personal experiance I cannot see wetting agent contamation causing this problem, if it does then I feel sure that with my regime I would get the problem all the time, and I have never seen this on any negative I have developed, I use wetting agent in my final rinse, I use it in my developing tank with the film in the reel, I empty the tank, take out the film, shake it and hang it up to dry, turn the tank upside down, put the empty reel on the top of the tank to dry, I don't wash it, put it in the washing up machine scrub it or anything else, just leave it to dry until I next develop a film, and my Negative's never have that problem, they are clean and nice, so forgive me if I am sceptical about wetting agent contamation being the cause of problems of any sort, either loading films or negative problems, for me the problem must lie elsewhere
Richard
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jerseyinblackandwhite.blogspot.com |
#39
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In case anyone is still interested, I finally solved the puzzle... It was me after all
Quite a long tale so I will try to shorten it. I've been processing my own films my 'own way' for decades, but after a few recent issues with a couple of films with slightly uneven processing, someone suggested that I tried the official Ilford way of inverting the tank etc. to see if this solved the problem of the uneven processing. It made things better, so I started using the 'Ilford' method as-per the Ilford PDF instructions for developing film in a tank. As I didn't like the idea of belting the bottom of the tank down on the work surface after each set of inversions, I tapped it on the sides a couple of times instead. An action that appears to have been the issue. When someone talked about possible differences between the Fuji and Ilford film backing on this forum, this is what lead me to suddenly think of the waves you see in a bath of water with different frequencies causes sets of ripples with certain patterns. (we're talking ordinary school-level physics here). Thus I started to wonder whether my tapping the sides of the tank were developing sets of identical regular ripples in the developer in the tank? I mused that if the ripples from the type and weight / thickness of the Ilford film was different to that of the Fuji - then the effect might be completely different with maybe patterns that were not so strong / regular in the solution. Conclusion. Tried a roll of FP4 from same batch with single hard tap of the bottom after each set of inversions instead of side tapping. Results? Perfect. Problem seemingly solved. Thank for all the ideas! |
#40
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Ted, I go as far as to give my tank a couple of taps on the bottom against a surface that is a kitchen worktop and have yet to see any damage to the tank.
I think that you'd have to really hammer the tank down onto a hard surface to risk any damage. Glad you've solved the problem Mike |
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film developing issue, problems |
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