RE: Mike Ware's POP Pt./Pd. Pt
I know what Na2 is and have used it as a contrast agent. I just did not know that it was called Platinum 6. Several people I know have adopted this method of contrast control and it does have some advantages. However, I have continued to use dichromate for straight palladium work because the use of Na2 causes a shift in color, i.e. the more you add the more neutral the color becomes, whereas with dichromate you get the same color over a wide contrast range. At least that is my experience. I believe you suggested in an earlier message that the use of dichromates causes a change in color, but I sure have not found that to be the case with pure palladium. Sandy At 11:46 AM +0100 11/11/06, Witho Worms wrote: See the Bostick&Sullivan site: Na2- A New Contrast Agent - An interesting salt of platinum allows for wide ranging contrast control in the platinum/palladium process. Great news for all platinum printers, read this! (http://www.bostick-sullivan.com/techart.php) You will there find some other interesting information on POP too. -----Oorspronkelijk bericht----- Van: Sandy King [mailto:sanking@clemson.edu] Verzonden: zaterdag 11 november 2006 1:39 Aan: alt-photo-process-l@usask.ca Onderwerp: RE: Mike Ware's POP Pt./Pd. Pt What is Platinum 6? Sandy At 6:14 PM +0100 11/10/06, Witho Worms wrote:I would recommend using Platinum 6 as a contrast agent for DOP. I can work very well. Dichromate is very effective in POP but affects printing colour. Regards, Witho -----Oorspronkelijk bericht----- V
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