Re: Paper negatives (Re: Tricolor gum, order of layers)
Loris, I can only report on my own findings, other people may work differently: - my cyanotype exposure with an Agfa Scanjet negative : 2 min 30 sec - my cyanotype exposure with an Epson Photo Quality Paper negative, oiled : 7 mins - my gum exposure with an Epson Photo Quality Paper negative, oiled : 2 mins to 3:30 mins - my caseine exposure with an Epson Photo Quality Paper negative, oiled : 40 to 60 secs I never tried exposure with un-oiled Epson Paper. Later tonight I will upload an example. Greetings, Guido 2008/10/6 Loris Medici <mail@loris.medici.name>: > Guido have you compared the exposure time with un-oiled negatives? Have > you noticed any mottling and/or unevenness? > > Your and Katharine's experience definitely contradicts with what was > reported by Judy and/or the actual writer(s) of the article in Post > Factory Photography - causing confusion on my part. > > I have only used baby oil (liquid paraffine) once, and the paper was > different few days later... Maybe there's a huge difference between very > little and too much!? > > Regards, > Loris. > > > 6 Ekim 2008, Pazartesi, 1:13 pm tarihinde, Guido Ceuppens yazmış: >> ... >> I completely agree with Katharine's post: I no longer bother with the >> mylar separation sheets and have used oiled negs after approx. 2 years >> with the same exposure times, the paper feels only slightly greasy. > > >
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