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#1
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think black lines on b+w negative
Hi,
I am new to developing B+W negatives and am having minor problems. I am developing HP5 plus in a spiral tank with ilfosol. I am getting good range of density and the majority of negatives are good. I am however seeing a few very thin black lines on the negatives, predominently on the film at the outer spiral. These are not scratches from the squeegee as they are not in the direction of the length of the film. I hope you can give me ideas as to what is the cause. Thanks for your help. Regards, Jon |
#2
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think black lines on b+w negative
Jon Downes spake thus:
I am new to developing B+W negatives and am having minor problems. I am developing HP5 plus in a spiral tank with ilfosol. I am getting good range of density and the majority of negatives are good. I am however seeing a few very thin black lines on the negatives, predominently on the film at the outer spiral. These are not scratches from the squeegee as they are not in the direction of the length of the film. I hope you can give me ideas as to what is the cause. Thanks for your help. Light leak from your camera? Hard to tell from your description; any chance you can post some pictures (scans of prints)? It would help to see what they look like: are they sharp and distinct, or soft and fuzzy? Regularly spaced? -- The only reason corrupt Republicans rule the roost in Washington is because the corrupt Democrats can't muster any viable opposition. |
#3
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think black lines on b+w negative
Jon Downes spake thus:
Hopefully this is enough of the scanned negative to see the problem. The line is white here but black on the negative. These lines are rare but distracting. This particular frame has just this line in the top right of the image, maybe a quarter of an inch or less in length Thanks for that. One thing, before others pounce on you: you shouldn't post pictures ("binaries") here, since this is supposed to be a text-only newsgroup. When I said "post" what I meant was to post it to a web site and post a link to it here. About that stuff on your negatives: I'm mystified. Perhaps others here have seen something like this? "David Nebenzahl" wrote in message .com... Jon Downes spake thus: I am new to developing B+W negatives and am having minor problems. I am developing HP5 plus in a spiral tank with ilfosol. I am getting good range of density and the majority of negatives are good. I am however seeing a few very thin black lines on the negatives, predominently on the film at the outer spiral. These are not scratches from the squeegee as they are not in the direction of the length of the film. I hope you can give me ideas as to what is the cause. Thanks for your help. Light leak from your camera? Hard to tell from your description; any chance you can post some pictures (scans of prints)? It would help to see what they look like: are they sharp and distinct, or soft and fuzzy? Regularly spaced? -- The only reason corrupt Republicans rule the roost in Washington is because the corrupt Democrats can't muster any viable opposition. |
#4
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think black lines on b+w negative
"David Nebenzahl" wrote in message .com... Jon Downes spake thus: Hopefully this is enough of the scanned negative to see the problem. The line is white here but black on the negative. These lines are rare but distracting. This particular frame has just this line in the top right of the image, maybe a quarter of an inch or less in length Thanks for that. One thing, before others pounce on you: you shouldn't post pictures ("binaries") here, since this is supposed to be a text-only newsgroup. When I said "post" what I meant was to post it to a web site and post a link to it here. Apologies. It wont happen again. Regards, Jon About that stuff on your negatives: I'm mystified. Perhaps others here have seen something like this? "David Nebenzahl" wrote in message .com... Jon Downes spake thus: I am new to developing B+W negatives and am having minor problems. I am developing HP5 plus in a spiral tank with ilfosol. I am getting good range of density and the majority of negatives are good. I am however seeing a few very thin black lines on the negatives, predominently on the film at the outer spiral. These are not scratches from the squeegee as they are not in the direction of the length of the film. I hope you can give me ideas as to what is the cause. Thanks for your help. Light leak from your camera? Hard to tell from your description; any chance you can post some pictures (scans of prints)? It would help to see what they look like: are they sharp and distinct, or soft and fuzzy? Regularly spaced? -- The only reason corrupt Republicans rule the roost in Washington is because the corrupt Democrats can't muster any viable opposition. |
#5
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think black lines on b+w negative
"Jon Downes" wrote
Hopefully this is enough of the scanned negative to see the problem. The line is white here but black on the negative. These lines are rare but distracting. This particular frame has just this line in the top right of the image, maybe a quarter of an inch or less in length I would wager static electricity: was it cold and dry when the picture was taken or the film loaded onto the developing reel? Could also be wet lint - then it would come off with your fingernail. -- Nicholas O. Lindan, Cleveland, Ohio Consulting Engineer: Electronics; Informatics; Photonics. To reply, remove spaces: n o lindan at ix . netcom . com Fstop timer - http://www.nolindan.com/da/fstop/index.htm |
#6
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think black lines on b+w negative
On Mon, 23 Jan 2006 21:21:43 +0000 (UTC), "Jon Downes" wrote: Hi David, Hopefully this is enough of the scanned negative to see the problem. The line is white here but black on the negative. These lines are rare but distracting. This particular frame has just this line in the top right of the image, maybe a quarter of an inch or less in length Thanks, Jon Static. Usually caused by a combination of dry air and the rapid passge of film through the felted light trap on a film canister. == John - Photographer & Webmaster www.puresilver.org - www.xs750.net |
#7
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think black lines on b+w negative
How are you agitating the film? Does the film touch the outer wall of
your developing can? If you're doing inversion agitation then perhaps this is scratching your film. |
#8
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think black lines on b+w negative
nathantw spake thus:
How are you agitating the film? Does the film touch the outer wall of your developing can? If you're doing inversion agitation then perhaps this is scratching your film. No, unlikely. Of all the ideas so far, static electricity seems the most plausible. -- The only reason corrupt Republicans rule the roost in Washington is because the corrupt Democrats can't muster any viable opposition. |
#9
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think black lines on b+w negative
"Jon Downes" wrote in message
... Hi, I am new to developing B+W negatives and am having minor problems. I am developing HP5 plus in a spiral tank with ilfosol. I am getting good range of density and the majority of negatives are good. I am however seeing a few very thin black lines on the negatives, predominently on the film at the outer spiral. These are not scratches from the squeegee as they are not in the direction of the length of the film. I hope you can give me ideas as to what is the cause. Thanks for your help. Get a 10x loupe and see if there's something embedded in the emulsion. Might have been some lint in the tank. Static is the other possibility. Natural Light Black and White Photography http://mysite.verizon.net/vze76ane/ -George- |
#10
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think black lines on b+w negative
On Wed, 25 Jan 2006 16:26:13 GMT, "seog" wrote:
Get a 10x loupe and see if there's something embedded in the emulsion. Might have been some lint in the tank. Static is the other possibility. Believe me, it's static. I used to shoot a lot of Tech Pan which could generate a significant amount of static during re-wind. I has one entire roll ruined when the shooting in DC. Can you imagine the emount of static that it would take to flash an image onto a EI25 film ? St. Elmoe's Fire ! == John - Photographer & Webmaster www.puresilver.org - www.xs750.net |
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