Re: Anybody experimented with Argyrotypes?
Fernando, pt/pd is an acronym(?) for Platinum/Palladium printing. It's similar to Argyrotype - where the light sensitive compound is an iron salt (albeit different one/s), but in the Platinum/Palladium process the image is formed by colloidal noble metals: pure palladium or platinum/palladium mixture or pure platinum (pure platinum prints are somehow harder to do BTW...) In Argyrotype the image is formed by colloidal silver. The advantage of pt/pd is that the image is very stable compared to silver, the disadvantage is price -> colloidal silver images cost in terms of cents but pt/pd images will cost you in terms of dollars (not taking paper into account)... Also, I (subjectively) like more the tonality I can get from pt/pd prints. Regards, Loris. 27 Nisan 2009, Pazartesi, 11:29 pm tarihinde, fernando cruz florez yazmış: > Loris, > I've been following this thread with interest... great tips and good to > see > others also experimenting with these processes. > > I was just wondering what you were referring to with "pt/pd". I get the > feeling it's going to be another technique to look into ... > > > 2009/4/21 Loris Medici <mail@loris.medici.name> > >> I see. Let's hope Sam's nice suggestion works for you then -> if you're >> still interested in making Agryrotypes, that is. Also definitely try COT >> 320 (for whatever iron process), it's a really good paper. (If they >> didn't >> changed it!) I was happy with my Argyrotypes because I was always toning >> them with gold (which is pretty good priced in my location) -> which >> would >> give convincing blacks almost every time... Never liked the results I >> was >> getting with selenium and Vandykes (too yellow for my taste) therefore I >> never tried to tone my Argyrotypes in selenium. I would prefer pt/pd >> every >> time against Argyrotypes - no question! (Ease and quality.) >> >> Is there any on-line gallery showing those prints? >> >> To anyone: please let me know if you're coming to Istanbul/Turkey. I'd >> like to meet (and provide any help you need - if I can - with utmost >> pleasure). >> >> Regards, >> Loris. >> >
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