Re: color printing for dummies
watch out this
http://www.christopherjames-studio.com/materials/08dec07_Updates/The%20Book%20of%20Alternative%20Processes/NEW%20SAMPLE%20CHAPTERS/%20JAMES%20-%20Chapter%2016%20-%20Gum%20Bichromate.doc.pdf
or this
http://www.erickmengual.com/techniques/gomme_bichromatee.pdf
or
At 16:51 10/02/2009, you wrote:
i really need some help here. i searched the internet for hours yesterday,
to no avail. could someone recommend me a good tutorial for color printing
for alternative processes (esp. gum printing)?
i dabbled in color gum printing for the first time some days ago. i tried
rgb-separations from photoshop and exposed three layers: one for
cadmium-yellow, cadmium red and payne's grey each (i know not the best choice).
i think the outcome was somewhat successful. at least the green on the
chest looks pretty much like in the original. so i can't be that far off...
http://i31.photobucket.com/albums/c367/phritz/01-1.jpg?t=1234279590
ok, since i really have no idea about color printing, at first i thought,
i could just invert the image, split channels (getting three images.one
labelled r, one g, one b), and use the r-one for the red layer etc....
looking at the negs, i managed to find out (of course the red parts in the
original images have to be the thinnest areas in the neg for the red
emulsion layer) that i have to use the opposite colours: the r-channel for
the yellow emulsion....
now i wanted to play around a little with other pics, curves and cmyk
separations... now cmyk separations is really where my knowledge comes to
an end. do i have to use the opposite colours with cmyk too after
inverting and splitting channels?
the k-negative looks like it should be used with the black pigment
emulsion... and the others?
i know this is very basic stuff and i'm a little embarrassed that i can't
find it out by myself. but i really wasn't able to find a suitable
tutorial for that. all that negative, opposite colours and inverting makes
me dizzy.
how do i find out which separation is the suitable negative for which
pigment emulsion?
thanks for the help,
phritz
@+
Chris Nze
JL
http://chrisnzephotography.myshopify.com/
http://negatifnumerique.blogspot.com/
http://thelivredunegnum.blogspot.com/
http://procedealt.blogspot.com/
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