Judy Seigel (jseigel@panix.com)
Fri, 29 Jan 1999 22:54:34 -0500 (EST)
On Fri, 29 Jan 1999, Liam Lawless wrote:
>
> I have a suggestion re. your problem anticipating how much density will be
> removed by fixing a partly-redeveloped neg. As I'm sure you've observed,
> silver iodide is relatively inert and takes ages to tone or redevelop. It's
> also pretty light stable as long as it doesn't get too much exposure to
> sunshine. I have read that putting an unfixed print or neg into pot. iodide
> solution converts any silver chloride or bromide into silver iodide; I've
> done this in different contexts and am sure it's true; indeed I remember
> reading in a very old book that some commercial desensitiser (German, I
> think it was) was thought to be a 4% solution of pot. iodide,
>
> My idea is basically that if, instead of fixing your neg when it appears
> right you stick it in pot. iodide, no significant density change will occur,
> and the result will be sufficiently stable on camera negs that are filed
> away in cabinets or ring binders. If necessary, they can always be fully
> redeveloped at a later date, to bring you back where you started. Worth a
> try if you have negs that are unprintable anyway.
You mean the silver iodide wouldn't have density? Ye gods Liam -- that's
either daft or brilliant... both, maybe. What % K iodide would you use?
Judy
This archive was generated by hypermail 2.0b3 on Sat Nov 06 1999 - 10:06:45