more about scratches on LF negativesgreenspun.com : LUSENET : Large format photography : One Thread
does anybody know about some chemicals or some other stuff (except grease) to smooth or fill in scratches on the base side of LF negatives?
-- Herwig Prammer (firstname.lastname@example.org), May 17, 2002
Tetenal do a product (available in the UK at least) called "Repolisan" which is intended to fill scratches in B&W and colour negs.
I have not tried it myself however so can not comment on its effectiveness - nose grease being free (and in plentiful supply at this location...).
-- Bob (email@example.com), May 17, 2002.
I use Edwal "No-scratch". It comes in a bottle with a brush.
-- David Rose (DERose1@msn.com), May 17, 2002.
You can use regular Spotone print retouching dyes with a good sharp brush. If you use too much on the negative then you can spot that out on the print since it'll be a light area now on the print.
-- David Vickery (firstname.lastname@example.org), May 17, 2002.
Repolisan has the effect of coating the entire negative with a kind of glue. There is a small but noticeable loss of definition and contrast over the whole negative, so it is really only indicated where the damage is widespread. I've used it on a valuable 35mm negative that had a large number of small scratches, and on balance the effect was positive. The scratches don't entirely disappear but they do become very much less obtrusive. You probably need to print a grade harder after using the product.
It's expensive though.
-- Richard Walker (email@example.com), May 18, 2002.
Works great on base scratches, but do not under ANY circumstances use it on the emulsion side.
It really does work. Use sparingly.
-- Bill Marsh (firstname.lastname@example.org), May 18, 2002.