RE: Mike Ware's POP Pt./Pd. Pt
The colour shift in DOP by Na2 (Pt6 is my homemade expression for it) must be very small? I have never noticed it. I never work towards an exactly predictable result. I always try to work on what a negative can give me. Maybe that is why. Dichromate causes a colour change in POP/palladium-only! It makes the print neutral in tone! Cheers, WW -----Oorspronkelijk bericht----- Van: Sandy King [mailto:sanking@clemson.edu] Verzonden: zaterdag 11 november 2006 14:38 Aan: alt-photo-process-l@usask.ca Onderwerp: 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
|