Digital BW, The Print

Ernst,

I bow to you. I never got it that Seurat was using additive color 
though it seemed clear that he expected the "mixing" to be in the eye.

I didn't really like the idea of using his name any more than I liked giclee.

I am curious to know: what are spectral scan and printing methods?

Best,

Eric


At 03:38 AM 8/8/2005, you wrote:

>Bert Katzung wrote:
>
> >Hi Eric:
> >It's been quite a while for me also, since I last saw a Seurat live, but my
> >impression was exactly the same as yours. Quite amazing how he constructed
> >the visual impression of colors with dots of other colors.
> >
> >And  I  agree that "giclee"  sounds affected. Well, back to old "Black &
> >white inkjet print" <G>.
> >
> >Regards,
> >
> >Bert
> >
> >
>There's quite a difference between the more or less additive color
>mixing of pointillism and the subtractive color mixing of printing. One
>of the reasons the Seurats do not deliver strong colors is in the
>inefficiency of additive mixing on reflective surfaces. Thta kind of
>color mixing needs a lot of light and that's achieved best with
>transparant colors or fluorescents and light getting through the
>colorants like in monitors, LED displays and in the past with the
>Autochrome slides. So the BO link with Seurat isn't on topic, the Giclee
>link isn't much better ...... There were however some pop art artists
>that used big enlargements of CMYK subtractive prints. Reproducing
>pointillism paintings with the usual RGB filtering in scans and digital
>photography + the translation to CMYK subtractive reproduction is
>difficult. Spectral scan and printing methods are now used to overcome
>that problem. This will become the high end of art reproduction anyway
>as in painting the use of many different colorants and the way they are
>applied, opaque, transparent layers etc varies per painting and even
>within one painting.
>
>Subtractive color printing has it flaws as well. In the highlights the
>dot size of CMY inks isn't covering the total white area of the paper
>which would be best for subtractive mixing. Using the LC and LM inks
>increases the coverage though and by that the subtractive mixing
>quality. That results in a (slightly) wider gamut of CcMmYK inksets
>compared to CMYK inksets. Best subtractive mixing is available in
>today's color films and prints, conventional rotogravure color printing,
>etc that are covering the total area with CMY(K) layers that vary in
>density  per spot.
>
>Ernst
>
>

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