RE: Lith film

I want to make my point clear and explain why I started this "lith film" discussion.
My purpose with lith film would be enlarging negs, only, maybe with reversal processing (I don't like to spend time in interpositives). I haven't been clear on that, I'm sorry.
What I encountered is indeed a problem of exposure range rather than a problem of density range (as Dave points it).

I want to enlarge negs with a common contrast (for silver gelatin printing). For a normal grade B/W paper let's say the neg density range is 1.6 (I measured it for my working conditions).
If I want to enlarge this neg and project it on a "candidate" sheet film, this sheet film has to offer a linear response over deltaD = 1.6, this means about 5.5 stops.
And, in the same time, yes Sandy, I need a resulting enlarged neg showing a 3.2 density range. We all have our recipe variations, and in my case, with palladiotype, I need it. I don't feel like changing my working conditions, at least not now.
Would there exist, in your various experiences, such a cheap lith film (point here is CHEAP not LITH) - developper combination, offering the translation of 1.6 deltaD exposure range into 3.2 deltaD density range (or 2 if stained) ? If you say clearly YES, please provide all the ACCURATE details otherwise it is pointless for me. If you say NO, well, too bad, the "lith films" I tested couldn't seperate such an exposure range at all either.
I think the question is very clear. I expect a yes or no answer (plus details if yes). It's maybe not the ideal way to enlarge negatives indeed, but I'm curious.

I wish you all a good week-end,

Philippe
Received on Fri Dec 12 09:37:36 2003