I have a suggestion. Get a regular silver print made from the neg and scan that print. Advantage of new print is to have a very clean surface and use a paper with little or no texture. Mark http://www.stillrivereditions.com On Jul 24, 2012, at 10:46 AM, Clayton Price wrote: > Well, with all the various scanning suggestions for very dense negatives, my experience has been > that none of them really work well, including drum scans. I've a collection of a couple dozen > negatives waiting for me to get around to using a chemical reducer, which IMO is the best, and > probably fastest way to save those negs. > > There's lots of info on the internet for reducers, but most of the googled inquiries turn out to be > lectures of how to expose your negatives, rather than fixing the already dense ones. > > However, if you decide to do it yourself, the most common process is a combination of > Farmer's Reducer (which is basically Potassium Ferricyanide), and Sodium Thiosulfate (which is > hypo/fixer). You would want to use only that, and not a rapid fixer or one with hardener in it. > > The same chemistry will work as a subtractive reducer (removing equal amounts of silver from > both the highlight and shadow areas) OR as a proportional reducer ( removing more from the > overexposed or overdeveloped highlights than from the shadow area. > > The subtractive method is a singe solution of Farmer's Reducer with Sodium Thiosulfate, and the > proportional method is two trays - one with each chemical, and the process can go back and > forth until the densities are correct. Diluting both solutions with water, will slow the process, which > is helpful, especially when one is first trying the process. Finally, one would wash the reduced > negatives for about 15 minutes, then add a couple drops of Photoflo to get a streak free dry surface. > > You do not need a darkroom - my plan is to use the kitchen sink! You do need rubber gloves > and a couple or three darkroom trays - plastic or stainless steel. > > Finally - there's tons written about this process. I stumbled on one book called the Elements of > B&W Printing by Carson Graves. He has a chapter called "Salvage Techniques - negative > reducers". I'm not connected in any way with the author or publishers, but it looks like a > helpful publication - accessible both from the internet and bookstores. > > These days, the best source I know of for purchasing the chemistry is Photographers' Formulary. > > Hope this helps. > > Clayton Price > www.claytonpricephotographer.com
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Re: [Digital BW] Re: Scanning through dense negatives
2012-07-24 by Mark Savoia
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