[alt-photo] Re: Alt-photo-process-list Digest, Vol 153, Issue 1

[Paul Viapiano]

FWIW, I started out with ammonium citrate developer (at room temp) for pure palladium printing and loved the tones. I migrated to warm PO after a few months and loved the warmth. However, whenever I show my earlier prints to people (including pt/pd printers) they always say, "Now, what is this?" They love the more neutral color. Maybe it's the perception of increased contrast or a perceived solidity of a darker/neutral tone, I'm not sure.

Some feel that PO gives a smoother rendition of tonality, but I like the variety of choice here and may return to AC for a series soon. I've never tried SC although I do have some in the chem closet.

Paul


----- Original Message ----- 
From: "Marek Matusz" <marekmatusz at hotmail.com>
To: "alt photo" <alt-photo-process-list at lists.altphotolist.org>
Sent: Tuesday, May 18, 2010 10:28 AM
Subject: [alt-photo] Re: Alt-photo-process-list Digest, Vol 153, Issue 1


> 
> DOn,
> 
> Thanks for the post. If I can read you post correcty there might be some differences in the final colour image, although I find that humidity has perhaps a strongest influence.
> 
> Can the citrate developer be replenished like traditional POTA developr?
> One advantage might be that citric acid is easily accessible and cheap.
> 
> Marek 
>> From: donsbryant at gmail.com
>> To: alt-photo-process-list at lists.altphotolist.org
>> Date: Tue, 18 May 2010 08:11:00 -0400
>> Subject: [alt-photo] Re: Alt-photo-process-list Digest, Vol 153, Issue 1
>> 
>> Hello Marek,
>> 
>> >
>> Are there any benefits/differences for the citrate developer vs. traditional
>> potassium oxalate for palladium printing?
>> >
>> 
>> Sorry to take so long to answer your question (assuming it was directed to
>> me vs the general list) I receive the list posting in daily digest format so
>> I'm not too interactive, but the primary difference amongst different
>> developers is the final color palladium prints will have. Generally speaking
>> warm potassium oxalate creates much warmer toned prints than sodium citrate
>> and ammonium citrate shift to a warm-neutral tone. But the type of palladium
>> salt and ferric oxalate used also affects the color too.
>> 
>> Did that help?
>> 
>> Don Bryant
>> 
>> 
>> 
>> _______________________________________________
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