RE: Ware/Malde-Ziatype-DOP palladium,was RE: "New" Paper for Pt/Pd (and other iron processes, too)
Hi again Camden, See: http://www.loris.medici.name/Camden_small.jpg Lighting's not perfect but it shows what you need to see. Both are straight Ziatypes (AFO + LiPd only). The print on the left was printed as soon as it was surface dry (5-6 minutes max.), the print on the right was printed after a 20 minutes waiting period and the RH was quite low (something like 35%). The print on the right looks more contrasty because it was coated with semi-gloss polyurethane wood finish. Hope this helps. Loris. -----Original Message----- From: Camden Hardy [mailto:camden@hardyphotography.net] Sent: 01 Aralık 2006 Cuma 20:53 To: alt-photo-process-l@usask.ca Subject: RE: Ware/Malde-Ziatype-DOP palladium, was RE: "New" Paper for Pt/Pd (and other iron processes, too) Interesting. I read somewhere (I was going to cite it, but alas I can't find the source...maybe I dreamt it) that ziatype, in its basic form, is fairly constant between 20%-80% RH. Another look at the official ziatype article on the B&S website (http://www.bostick-sullivan.com/techart.php) showed me that 50%-65% RH is recommended. That is kind of an interesting idea, "split-toning" with different humidity. Maybe one of these days I'll play around with it. :) Which side was the purple, the dry or humid side? Camden Hardy camden[at]hardyphotography[dot]net http://www.hardyphotography.net On Fri, December 1, 2006 11:33 am, wcharmon@wt.net wrote: > Actually, humidity can be a huge factor in Ziatype. I learned this the > hard way early on when I was printing a ziatype of a long 7x17 inch > negative. I made the mistake of opening up the same side of the split > back printing frame each time I checked the exposure, which > inadvertently allowed one half of the print to dry out a little more > while the unchecked side sat nice and cozy and humid between the glass > and the back of the frame. This gave a whole new meaning to the term > 'split tone', because I ended up with a print which had a left side > that was cool purplish black and the right side a warm toasty brown. > I'm sure someone will immediately sieze on this observation to create > a way of controlling this effect so that different parts of a print can be different tones. >
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