From: Vincent Dobson (manitec@bellsouth.net)
Date: 01/29/03-07:10:32 PM Z
Esteemed colleagues,
Has anyone herein used the services of dr5 to make positive B&W chromes from
their exposed B&W film and then used these chromes to enlarge negatives for
contact printing?
Vince Dobson
Visions In Nature
www.VisionsInNature.com
-----Original Message-----
From: Scott Wainer [mailto:smwbmp@starpower.net]
Sent: Wednesday, January 29, 2003 7:55 PM
To: alt-photo-process-l@sask.usask.ca
Subject: Re: Acros Films
> > As for ascorbate film developers, I tend to lump them with the PQ/MQ
> > developers.
>
> However, the chemistry of hydroquinone and ascorbate is very different.
>
I know, I know - very bad but I still do it anyway.
> > The "thickened" developer sounds interesting; I haven't heard of it
before.
> > Could it be used with a developer like Pyrocat? I might like to try it
with
> > 4x5 film using the dip-n-dunk method. How would the developer react to
> > gelatin or gum arabic as the thickening agent (I don't have any
> > methylcellulose handy)?
>
> I suppose it can be done with pyrocat, but I did not try it. I suggest
> you use a good replenishing developer because one shot use is VERY
> wasteful with this approach. Replenishing developers are not as
> inconsistent as some books (and many people) talk about, if used
> wisely. (Indeed, it's very consistent in my experience.)
>
> I wouldn't use gelatin. If removal is not complete and you realize
> after drying, you are in trouble. Methylcellulose works well. (It's
> used as athickening agent in some shampoo, etc.)
Any idea where I can lay my hands on some Methylcellulose? (I'm located due
south in Maryland.)
Scott Wainer
smwbmp@starpower.net
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