[alt-photo] Re: Gold chloride in Pt/Pd sensitizer

[Jon Reid]

thanks Eric,

Jon

On 5 May 2010 13:50, EJ Photo <ejnphoto at sbcglobal.net> wrote:

> Yes, how cool do you want to go? If you are using sodium with your
> palladium, switch to ammonium. Did hard to do if you buy a liquid from B&S,
> so always buy power and mix it yourself as need.  Don't get to carried away
> with small amounts but, you can have a little sodium and some ammonium that
> way.
>
>
> Potassium Ox even at room temp is a warmer developer than ammonium citrate.
> Different exposure is required.
>
>
> Eric Neilsen
> Eric Neilsen Photography
> 4101 Commerce Street, Suite 9
> Dallas, TX 75226
>
> www.ericneilsenphotography.com
> skype me with ejprinter
> www.ericneilsenphotography.com/forum1
> Let's Talk Photography
>
>
> -----Original Message-----
> From: alt-photo-process-list-bounces at lists.altphotolist.org
> [mailto:alt-photo-process-list-bounces at lists.altphotolist.org] On Behalf
> Of
> Jon Reid
> Sent: Sunday, May 02, 2010 11:45 PM
> To: The alternative photographic processes mailing list
> Subject: [alt-photo] Re: Gold chloride in Pt/Pd sensitizer
>
> Thanks for your reply Eric. I've tried the cold variety of Potassium
> Oxalate (usually at around 20-22DegC) and normal KOx, at similar
> temps, and not seen a great deal of difference in image tone.
> Is there something else I could try?
>
> Does post-development toning in Gold Chloride yield similar colour
> change?
>
> Jon
>
>
> On 03/05/2010, at 1:10 PM, EJ Photo wrote:
>
> > Jon, The color and the effects depend on a variety of situations
> > which is
> > why you site all those in your question. The gold reacts very fast
> > with
> > platinum, which is why Mike suggest not using it because he prefers
> > not to,
> > not because it can't be done. It just will start to react when
> > added to the
> > solution. Which can lead to streaks, and color that includes
> > violet. Is it
> > wrong? just not a smooth print. Can it lead to less grainy prints?
> > it does
> > smooth out the highlights but CAN add grain if you use it with .....
> >
> >
> > Best thing to do is try it and find out how you like it. Buy a
> > stronger
> > solution which can be diluted, very hard to make a strong solution
> > out of a
> > weak one : )
> >
> > There are several ways to cool an image, if that is all you want to
> > do.
> >
> > Eric
> >
> > Eric Neilsen
> > Eric Neilsen Photography
> > 4101 Commerce Street, Suite 9
> > Dallas, TX 75226
> >
> > www.ericneilsenphotography.com
> > skype me with ejprinter
> > www.ericneilsenphotography.com/forum1
> > Let's Talk Photography
> >
> > -----Original Message-----
> > From: alt-photo-process-list-bounces at lists.altphotolist.org
> > [mailto:alt-photo-process-list-bounces at lists.altphotolist.org] On
> > Behalf Of
> > Jonathan Reid
> > Sent: Sunday, May 02, 2010 7:39 AM
> > To: The alternative photographic processes mailing list
> > Subject: [alt-photo] Gold chloride in Pt/Pd sensitizer
> >
> > Hi all,
> >
> > I was hoping to get a consensus view on the addition of gold chloride
> > in Ferric Oxalate. Dick Arentz claims that one drop 5% gold chloride
> > added to the sensitizer will cool the image tone and possibly reduce
> > granularity.
> >
> > I have read other reports that state one drop of 1%. Then there's a
> > book called New dimensions in photo processes: a step-by-step manual
> >   By Laura Blacklow, in which she states that "1-2% gold chloride, a
> > few drops to warm the tones and reduce the contrast of a platinum
> > print". I don't own this book but it showed up in Google Books after a
> > search.
> >
> > Mike ware seems to discount the use of gold chloride in all but pure
> > palladium prints. I can't check my Christopher James book right now as
> > it is not with me.
> >
> > I searched the archives of the list but only really found references
> > to post-development toning using gold chloride.
> >
> > I'm printing 5x7 pyro negs with 6 drops sensitiser and 7 drops metals.
> > Bostick and Sullivan sell it in 0.2%, 1%, 5% and 10% strengths.
> >
> > Lastly, is the effect the same as gold toning post-development. If so
> > I can see advantages ion not handling/wetting the paper twice.
> >
> > Sincerely,
> >
> > Jon
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