Re: Good demonstration of metamerism?
Re: Good demonstration of metamerism?
- Subject: Re: Good demonstration of metamerism?
- From: Ernst Dinkla <email@hidden>
- Date: Tue, 15 Jun 2010 22:10:30 +0200
Marco Ugolini schreef:
Ernst Dinkla wrote:
Traditional silver halide paper going way back to when there was no
OBA/FWA added to analogue B&W papers?
I would say add some of the best inkjet pigment B&W prints possible today.
A carbon black, quad B&W, inkjet print on a non-OBA paper like Canson
Rag Photographique may show less change in the switch from tungsten to
poor fluorescent light. Warmer in both cases but not as warm as a
Portriga print from way back. A neutral version then of that combination
giving a more consistent neutrality with both lamps. Probably more
convincing.
Myself, to be frank, I've always looked at B&W pigments as a pain. One completely has to change the way one uses an inkjet printer, alter it in a fundamental manner, and make it useless for normal functioning.
I've seen the results of more accessible technologies like ImagePrint and Epson's Advanced B&W, both of which use a printer's standard ink set, and the color constancy of the results among light sources is remarkable. (Yes, color constancy, not "metamerism", in case someone feels compelled to "correct" me...)
Not to mention that both these latter technologies allow for a range of toning options as well, which B&W pigments don't, at least not nearly as flexibly, or with as wide a range of possible hues.
Occam's Razor suggests that one ought not look for a complex solution where a simpler, more parsimonious one is proven to work. (Well, Occam's Razor actually concerns simple and complex THEORIES, rather than TECHNIQUES, but I think that the analogy holds, or at least offers room for thought.)
<http://en.wikipedia.org/wiki/Occam's_razor>
Marco Ugolini
Today it will be more difficult to get an analogue print made on non-OBA
silver halide paper than a quad pigment inkjet B&W print on non-OBA
inkjet paper. I didn't have the custom B&W inkjet solutions in mind but
they have earned their place in the market too.
The HP Z3100+ Z3200, both 12 ink models have a B&W driver mode that uses
the MK+PK+Grey+LIght Grey ink in some matt media presets. A quad
formation in essence. Leaving 7 inks for color toning of that B&W print
if desired.
In the driver's color mode, a neutral white paper + a custom profile for
it, the use of any hue inks is also absent. The result of the carbon
based quad inks already made neutral at the factory + a heavy black
generation.that eliminates any composite greys. So quad in a sense too.
Nice as good Color and B&W prints can be made on one print page in one
print run. But not delivering the same Dmax the driver's B&W mode is
capable off.
The B&W driver modes and extra monochrome inks available in today's wide
format pigment ink models build upon the custom carbon ink B&W quad etc.
solutions pioneered by third parties and enthusiasts. Pioneered for good
reasons like better control on metamerism effects (will that pass as
scientific terminology?). For absolute quality B&W there still is a
place for septone etc custom B&W inksets.
Epson's ABW driver mode still uses composite greys in its B&W grey mixes
and has to compensate the warm black carbon ink with some hues to make
neutral prints. Roy Harrington's Quadtone RIP should be mentioned here
as it is the better B&W driver for normal and converted Epson printers.
-
Dinkla Gallery Canvas Wrap Actions
| Dinkla Grafische Techniek |
| www.pigment-print.com |
| ( unvollendet ) |
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