From: Dave Rose (cactuscowboy@bresnan.net)
Date: 09/24/03-09:30:32 PM Z
#1: From what I've read, The Vandyke process does require 'contrasty'
negatives, so your underexpose/overdevelop approach should be suitable.
#2: I've never done it, but yes, I do agree, oiled paper negatives sure
sounds messy.
#3: If done properly, creating enlarged negatives via interpositives offers
a tremendous degree of control. You've had experience printing lith, so
this should be a relatively easy approach. I've had excellent results
producing enlarged negatives on film. You're certainly not "talking crap".
Best regards,
Dave in Wyoming
----- Original Message -----
From: "Robert Krawiec" <robk64@yahoo.com>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Wednesday, September 24, 2003 3:35 PM
Subject: Re: Van Dykes
>
> --- Judy Seigel <jseigel@panix.com> wrote:
> >> I believe it's futile to talk about "contrast" or
> > "density" in the
> > abstract.... you need to run a test with a 21-step
> > sensitivity guide and
> > then read the steps -- getting both the number of
> > steps and the difference
> > between step zero and the surround ("D-Max").
> >
>
> I've just joined this group...I'm very interested in
> alternative processes but have minimal experience,
> although I did just get a cyanotype kit so I hope to
> get started pretty soon. I have a few questions about
> this thread...
>
> 1. I've read that a good starting point for getting
> negs of the right density is to underexpose your film
> by one stop then over develop by 70-100%. Other
> sources say overdevelop and overexpose. Anyone have
> any suggestions on this?
>
> 2. As I only have 35mm and 6x6, I ultimately want to
> enlarge my negs, either digitally or via an
> interpositive. I've heard that the best way to do this
> digitally is using a cheap paper and oiling it. Anyone
> have any experience with this? Seems a bit messy to
> me...
>
> 3. I've also heard that creating an interpositive can
> lead to all sorts of problems with density and
> contrast. Is there a trick to doing this correctly?
> Having done a lot of work with lith printing, I
> would've thought that exposing the film for the
> "highlights" then developing for "shadow density"
> might help...or am I talking crap?
>
> Thanks!
>
> Rob
>
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