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Photo Forum / Film Photography / Darkroom / August 2004scratch on 4x5
I'm a newbie to large-format, but I finally got a winner (in the form of a 4x5 negative). Unfortunately I also see a couple scratches on the negative likely due to tray development. Can anybody advise on the best way to make a print using my DII enlarger w/ a condensor? I've read about "nose grease" on the archives. Does this go on the emulsion side or the shiny side? How do I clean it off afterwards? Is this the best way or should I just try to spotone the scratches. Fortunately the scratches are in a textured area of the picture (grass field). I wonder if there is another way to blur it together... In that case spot it out. Save your nose grease for other purposes. BTW Edwal makes a product called NO Scratch its grease free what's in it no one nose for certain. > Fortunately the scratches are in a textured area of the picture (grass > field). I wonder if there is another way to blur it together...  SignatureLF Website @ http://members.verizon.net/~gregoryblank "To announce that there must be no criticism of the President, or that we are to stand by the President, right or wrong, is not only unpatriotic and servile, but is morally treasonable to the American public."--Theodore Roosevelt, May 7, 1918 > In that case spot it out. Save your nose grease for other purposes. > > BTW Edwal makes a product called NO Scratch its grease free what's in it > no one nose for certain. No-Scratch once contained (I'm sure among other ingredients) Turpentine. Still has that kinda smell to it. It has approximately the same refractive index as film base and should be applied to the scratched side of the negative. It cannot replace emulsion that has been scratched away, however. Cleans up well with PEC-12 >> In that case spot it out. Save your nose grease for other purposes. >> [quoted text clipped - 6 lines] > negative. It cannot replace emulsion that has been scratched away, however. > Cleans up well with PEC-12 I have a 20-year old bottle of that (don't ask). It is still a liquid, so maybe I'll give it a try. "> > I have a 20-year old bottle of that (don't ask). It is still a liquid, so > maybe I'll give it a try. I had a bottle that old and it had yellowed ( I don't have to ask, I already know). If it's yellowed, get a new bottle (it's cheap). Especially if you're using VC (or color) paper. If you are, it'll give you a contrast (color) shift where it's applied. Shouldn't matter with B&W graded paper. My preference (and I have done this) would be to make a copy negative. If you can get some Kodak SO-132, which comes or came in 4x5 size, that would be best. Then you can play with the copy without impairing the original. If the scratch shows as white on the print, then it is causing increased density on the negative. It will be necessary to bleach the damaged area of the copy negative very, very carefully. An alternate process here would be to copy the damaged negative onto a regular negative, then add spot toner to the positive copy, then copy once more back to a second derivative copy negative. This, however, requires a lot of careful attention to maintaining contrast throughout the two exposures. Conversely, if the scratch yields a dark line on the print, it is reducing density on the negative and adding spot toner to the copy negative should resolve the problem. Francis A. Miniter >I'm a newbie to large-format, but I finally got a winner (in the form of a >4x5 negative). Unfortunately I also see a couple scratches on the [quoted text clipped - 9 lines] >Fortunately the scratches are in a textured area of the picture (grass >field). I wonder if there is another way to blur it together... > My preference (and I have done this) would be to make a copy negative. > If you can get some Kodak SO-132, which comes or came in 4x5 size, that > would be best. Then you can play with the copy without impairing the > original. IIRC its been discontinued. SignatureLF Website @ http://members.verizon.net/~gregoryblank "To announce that there must be no criticism of the President, or that we are to stand by the President, right or wrong, is not only unpatriotic and servile, but is morally treasonable to the American public."--Theodore Roosevelt, May 7, 1918 |
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