I have a very important 8x10 negative that has a scratch , I have done all I could do to touch it up and have printed it and retouched it , but wonder what I could do to make a digital copy of this negative , is there anything i could read about this somewhere other then what I see when I do a Google search, I know that this huge brain trust has got to have someone that is in a know
Might it be possible to re-photograph the negative on a light-box, using a high-resolution digital camera?
(I'm assuming that you're thinking of using software to digitally remove or retouch the scratch?)
In the olden days, retouching negatives was done using a variety of tools, such as the faithful lead pencil.
Depending on the film, you can retouch either on the base or the emulsion side, or on both sides. I think you might be able to find quite a few good posts on hand retouching on APUG. After all, some people here actually did it when it was still current!
Without seeing the image to see how many elements of the pic are affected, you can work wonders in PhotoShop. I've used it a number of times to "restore" some old family pictures with a variety of flaws. It can be tedious depending on how bad it is, but it's surprising how much of an improvement you can make.
find a flatbed scanner that takes the 8x10 neg, scan it in the high resolution (depends on your finial prints), then fix the scratch in Photoshop. This might be the easist way.
If you want to discuss making a digital negative, your best bet is to ask over on APUG's sister site, hybridphoto.com, since digital negs are off topic for APUG, and there is a vibrant discussion of this topic over there.