adrienlucca
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May 16, 2012
fake Light, 1st TW pass (in progress…)
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The lightness will change as if there was a perfect lamp at 17 cm from the center of the figure.
The white structure appears really “transparent.”
This geometrical solution could be called the “pixel solution,” since the surface is divided in 2×2 cm squares, other solutions are possible and will be tried later on the study: concentric zones, gradients… The only color added to the grey background is Titanium White (TW), later I’ll try color, enjoy ;)
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May 14, 2012
transparent square
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Fine-tuning of titanium-White and carbon-Black to “match’ the lightness of the grey background. Bizarre: following my measurements it was supposed to disappear in the middle, maybe a mistake…
detail below, click to zoom!
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May 14, 2012
(will) disappear
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Fine-tuning of titanium-White and carbon-Black to “match’ the lightness of the grey background.
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May 8, 2012
Hi-resolution picture: étude D65 #2, équivalences / dégradés / disparitions, 2012
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May 5, 2012
étude D65 #2, équivalences / dégradés / disparitions, 2012
étude D65 #2, équivalences / dégradés / disparitions, 2012
hand-made drawing: pigments, indian ink & pencil on paper
162 x 110 cm
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May 4, 2012
just before vanishing
One more layer of color and the entire section will appear grey, and the circular zones will disappear.
Details below
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May 2, 2012
a little problem
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The central segment of the figure is too dark, result: instead of becoming invisible the circular zone in the middle appears brighter than its surroundings… As corners do…
Its probably because of the wear affecting the tracing instrument. It might be possible to correct this with white lines, but it will be complicated! See you there soon….
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April 27, 2012
3 x disparition
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This is the final test: does grey circular samples made of bright colors and their grey surroundings made of black lines appear the same, or: visually equivalents. In other terms: do the color-made samples disappear?
It works quite well for these 3 first ones. 5 to go with the opposite problem: black-made samples, colored-lines made surroundings…
After this the question could be: what is the exact distance at which such optical colors mixtures become a “color field,” and how to know (calculate, predict…) it?
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below details:
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April 26, 2012
disparition
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Well made measures: no visual difference between the circular zone in the center, made of 4 colors, and its direct surroundigs made of black lines. :) :)
(blink if you dont see it!)
detail below:
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April 25, 2012
m-spiral 2: this is the 1st part
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The 8 circles are “metameric,” they share the same visual values. Well… they share color parameters: Hue, Brightness, Saturation, and are as I say “visually equivalent” at a certain distance (here something like 2-3 meters.) However, at a close distance they’re very different:
2 3 4
1 5
8 7 6
Sample #1, two colors: cadmium Yellow n°2 + Ultramarine Blue greenish extra
#2, 3 colors: cadmium “cinnaber” Red + a mixture between Turkish Blue Light & cadmium Yellow n°2 + Ultramarine Blue greenish extra
#3, 4 colors: cobalt Violet light brilliant + the Green + “cinnaber” + Ultramarine xtra
#4, 5 colors: cob Violet LB, mix Green, “cinnaber,” Turkish dark, Ultramarine xtra
#5, #6, #7, #8: all made of “lamp Black,” in different geometrical configurations
(All pigments are from the Kremer catalogue)
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below: detail
