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A gray card is a flat object of a neutral-gray color that derives from a flat reflectance spectrum. A typical example is the Kodak R-27 set, which contains one 8 in × 10 in (20 cm × 25 cm) card and one 4 in × 5 in (10 cm × 13 cm) card, each with an 18% reflectance across the visible spectrum , and a white reverse side with a 90% reflectance.
Harvest near Auvers (1890), a size 30 canvas, by Vincent van Gogh. French standard sizes for oil paintings refers to a series of different sized canvases for use by artists. The sizes were fixed in the 19th century. Most artists [weasel words] —not only French—used this standard, as it was supported by the main suppliers of artist materials ...
In photography, painting, and other visual arts, middle gray or middle grey is a tone that is perceptually about halfway between black and white on a lightness scale; [1] in photography and printing, it is typically defined as 18% reflectance in visible light.
Standardized IT8 charts (also called IT8 targets) are made by several companies including Coloraid.de, FujiFilm, Kodak, LaserSoft Imaging. [2] Unlike ColorChecker charts, IT8 charts are supplied with measurement values and can be used to create ICC color profiles by software (e.g. for digital cameras) to create reproducible color management.
The Canadian Conservation Institute lists ten agents of deterioration that play a role in damaging an object or work of art. [4] While all of these agents play a role in damaging a painting over its lifetime, five primary agents are involved in the degradation of an artwork's canvas and its pigment layers.
It includes 24 patches in a 4 × 6 grid, each slightly under 2 inches (5.1 cm) square, made of matte paint applied to smooth paper, and surrounded by a black border. Six of the patches form a uniform gray lightness scale, and another six are primary colors typical of chemical photographic processes – red, green, blue, cyan, magenta, and yellow.
He made the various layers of the painting dry quickly, without mixing of colors, so that he could soon create new layers on top of the earlier ones. [2] [3] No. 6 (Yellow, White, Blue over Yellow on Gray) belongs to Rothko’s late period when he for seven years painted in oil only on large canvases with vertical formats. Very large-scale ...
In the painting Whistler reverted to the planar composition of Arrangement in Grey and Black: Portrait of the Artist's Mother, and included the robe that created a broader shape, reminiscent of the dress from the earlier picture. [1] The canvas is slightly larger than that of the portrait of Mrs. Whistler, and is of a vertical format.