Do Iron prints go rusty? Chris -----Original Message----- From: owner-photoforum@xxxxxxxxxxxxxxxxxx [mailto:owner-photoforum@xxxxxxxxxxxxxxxxxx] On Behalf Of Trevor Cunningham Sent: 28 September 2011 04:25 To: List for Photo/Imaging Educators - Professionals - Students Subject: Re: palladium comparison -- Was: making pictures Plat/pal has measured # of drops...VD and cyanotype, I just dip a brush and go! Also, cyanotype and VD chemistry is much less expensive. Kallitype uses a similar chemistry to VD, but adds a development/toning step that does complicate it a bit more than the other two, but is still held up as the poor man's plat/pal. Palladium salts are certainly cheaper than platinum, but iron is cheaper still. The trade-off is tonal range, though. However, Mike Ware apparently has a cyanotype formula that addresses this. On 9/28/11 6:11 AM, YGelmanPhoto wrote: > Hmmm. Maybe there's a big difference between the usual palladium > processing and the (seemingly) simpler Ziatype method introduced by > Sullivan (of Bostick and Sullivan). Could you elaborate some > regarding "more involved and expensive" ? The chemistry and paper > coating is much simpler, at least. No? > > -yoram > > > On Sep 27, 2011, at 10:50 PM, Trevor Cunningham wrote: > >> By iron-based, I'm speaking of cyanotype, vandyke, and kallitype. >> Trust me that palladium is much more involved and expensive! >> >> On 9/27/11 9:35 PM, YGelmanPhoto wrote: >>> Trevor's comment is the first time I heard of an iron-based process, >>> so I googled and found this >>> <http://www.alternativephotography.com/wp/alt-proc/alternative-process-photo graphy-and-science-meet-at-the-getty>. >>> Fascinating, but too much to read in a month! >>> >>> I'm glad the alternative process I'll use most is much less >>> complicated -- making palladium prints. . . . [skip] . . . > >>> -yoram > >
