RE: Trivia time: room temperature solubility of platinic acid

I only use a couple of solutions, straight sodium chloropalladite +
ferric oxalate and the Na2 to control contrast. As you add more Na2
contrast increases and the tone becomes much more neutral. At some
point it becomes as neutral as a print made with equal parts of
palladium and platinum.

Most of my printing is done with digital negatives which have a DR of
about 1.8 and my preferred method of palladium printing is with
dichromate contrast control, not Na2. However, I have made quite a
number of prints with the Na2 method and the result has always been
as I describe.

Sandy

>Are you seeing that with only Na based palladium? Or with other types of
>palladium and platinum prints?
>
>Eric Neilsen Photography
>4101 Commerce Street
>Suite 9
>Dallas, TX 75226
>http://e.neilsen.home.att.net
>http://ericneilsenphotography.com
>
>> -----Original Message-----
>> From: Sandy King [mailto:sanking@clemson.edu]
>> Sent: Thursday, December 08, 2005 6:12 PM
>> To: alt-photo-process-l@sask.usask.ca
>> Subject: Re: Trivia time: room temperature solubility of platinic acid
>>
>> I agree with Kerik. In all of my experience in printing with
>> palladium, Na2 shifts the tone of palladium prints from warm toward
>> neutral. The more Na2 you add, the more neutral the print.
>>
>> Sandy
>>
>>
>>
>>
>> >On Thu, 08 Dec 2005 17:18:43 -0600, Eric Neilsen
>> ><e.neilsen@worldnet.att.net> wrote:
>> >
>> >>In fact I can see no reason why it wouldn't
>> >>work as well or better than Na2. Better? More neutral. Na has a
>> >>tendency to warm up palladium prints, so I'd expect the elimination
>> >>of it to reduce the warmth of your print.
>> >
>> >Hmmm... no. Na2 causes Pd prints to shift towards neutral.
>> >
>> >Kerik Kouklis
>> >www.kerik.com
Received on Fri Dec 9 09:07:14 2005