[pure-silver] Re: Chromogenic toning?
- From: "Tim Rudman" <ps@xxxxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Sat, 12 Feb 2005 11:05:29 -0000
I have been away for a few weeks Nick and just picked this up.
It is easy to confuse all the different metal toners, chromogenic toners,
dyes and tints, colour couplers and colour formers - especially as some kits
like Colorvir include mixtures of many different types to be used together
or in a variety of combinations.
If you take them one at a time Nick, from the beginning of the chapter, it
will make more sense by the time you get to the chromogenic section of that
chapter. It is a complex looking collection at first sight I know, but
becomes simpler when you take one piece at a time , preferably in practice
in the darkroom.
I haven't confused toning and tinting but it might need a re-read to get the
differences clear in your mind. It is actually much easier to grasp the
difference when you start to experiment with the products than when reading
about it! It 'clicks' easier when you see it happening in the dish rather
than reading about it in a more abstract way.
Remember that with the Chromogenic kits you also have the choice of
colouring the greys (any colour) with the colour former on redevelopment
(leaving the whites white as in the snow pictures used to show this) and
still having the silver in place to give density, to the blacks especially,
and also masking some of the colour - or you can use a second bleach stage
to remove some or all of the silver, leaving/revealing just the colour. The
weaker dye colours (yellow for example) may only really show their colour
with this process when the silver is removed. There is an example of this on
P. 150 - but of course there is a continuous spectrum of effects between the
2 shown.
Sadly Tetenal have discontinued their excellent kit for this now, but I
_think_ Rockland still make theirs
Tim
-----Original Message-----
From: pure-silver-bounce@xxxxxxxxxxxxx
[mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of Nick Zentena
Sent: 22 January 2005 02:35
To: pure-silver@xxxxxxxxxxxxx
Subject: [pure-silver] Re: Chromogenic toning?
On January 21, 2005 09:03 pm, Richard Knoppow wrote:
>
> I have a _very_ high regard for Tim Rudman but he is wrong about
> this. I think he is confusing _tinting_ with toning. Tinting if done
> by staining either the gelatin or the support and is as described. Dye
> _toning_ is done by converting the silver to a substance which acts as
> a mordant for the dye. It is then removed by fixing leaving the dye
> image in the gelatin. If done right neither the gelatin itself or the
> support is dyed. The whole idea of a mordant is that the dye sticks to
> it in preference to the genatin in which it is embedded.
It's very likely I screwed up so lets not blame anybody but me-) The quote
I gave was for gelatine dyes. I guess the process your mentioning is covered
under dye mordanting processes.
Nick
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