Re: Lith film

I don't think there is an easy way to achieve what you want in one step. If
you don't mind doing masking, that would be achievable though.

Dave S

----- Original Message -----
From: "Monnoyer Philippe" <monnoyer@imec.be>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Friday, December 12, 2003 10:37 AM
Subject: 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 09:57:56 2003