[alt-photo] Re: Subject: Re: paper and cyanotype

[Christina Anderson]

Dear Loris,
In corresponding with Ware I think my clearing issue, especially on Buxton, indicates possible problem chemistry. Thus I will have to buy a new batch and mix it from scratch. And here I thought buying it readymade might be better quality control but I think not :(

Traditional curve is a bit flatter but follows same what I call shorter scale curve. But now I am rethinking my Ware's results until I get the new chems.

Nice to hear about your "bust" with oxalic and FAEW. Saves me a step!
Chris


Christina Z. Anderson
christinaZanderson.com

On Feb 22, 2012, at 11:33 AM, Loris Medici wrote:

> Dear Christina,
> 
> 22 Şubat 2012 17:04 tarihinde Christina Anderson <zphoto at montana.net> yazdı:
>> ...
>> Ware's is a b--ch to clear, and really requires citric acid to get the yellow out (or an hour or more soak time) on this paper. With my water, of course.
> 
> Citric acid clear is my standart procedure for both trad. and Ware
> cyanotype processes. Not a big deal once you get used to it ;) hehehe.
> Haven't tried Buxton but all suitable papers were clearing easily (w/
> one dessert spoon citric acid into 1000 - or was that 2000? not
> critical actually... - ml water). Total processing time around 10-15
> minutes... (Shorter processing for thin papers like Masa.)
> 
>> Ware's however is a bit snappier in the midtones--may be my coating technique ...
> 
> Plus, IME, Ware's highlights are much much more soft / smooth /
> continuous... I could never get the same creamy highlight rendition w/
> the traditional formula!
> 
>> Curve for both is almost the same which did surprise me.
> 
> My trad. cyano curves were always flatter (because of the more
> contrasty / short ES process) compared to cuves I devised for the Ware
> variant.
> 
>> ...
>> Now onto Platine and Masa. Really I should do an FAEW next because that is a hard paper for cyano.
> 
> Masa is great to me! And, IMHO, FATW / FAEW are both out of scope for
> any kind of iron / iron-silver processes including cyanotype. I could
> make them work OK (not good, just a plain and simple OK) with HCl
> acidification (BTW, oxalic acid pre-treatment was a total
> disappointment for me w/ the Ware formula. Awful; a gritty gritty
> paper and grainy image - I don't know why?) , but to me they're both
> useless for the purpose... I guess I have too high expectations! ;)
> 
> Regards,
> Loris.
> _______________________________________________
> Alt-photo-process-list | http://altphotolist.org/listinfo