Overlay

Layer of material taped to a mechanical, photo or proof. Acetate overlays are used to separate colors by having some type or art on them instead of on the mounting board. Tissue overlays are used to carry instructions about the underlying copy and to protect the base art.<br><br>Something ? perhaps a layer of paint or some other material, such as wood veneer or gold leaf ? that is laid over or covers another surface. It may also be a transparent sheet like an acetate or cel containing images in some areas areas, which is placed atop another image to be incorporated into it.Examples:Franti?ek [aka Franz or Frank] Kupka (Czech, 1871-1957), View from a Carriage Window, c. 1901, gouache and watercolor on paper with cardboard overlay, with cut out overlay: 19 7/8 x 23 5/8 inches (50.6 x 60 cm), Museum of Modern Art, NY. See Art Nouveau, Symbolism, and Orphism.Tom Bahe (Navajo-American, contemporary), Pendant & Pin Combination, c. 2001, sterling silver overlay, diameter, 2 1/2 inches. This piece of jewelry is constructed of two sheets of silver soldered together, the top one having a pierced design laminated to the lower one which is solid.A digitally produced overlay of a partially transparent photo of one golpher onto the photo of another. This overlay was made in order to compare the swings of the two golfers. In Adobe Photoshop, "overlay" is a tool or action between "multiply" and "screen." It either multiplies or screens, depending on the value of the pixel underneath. Overall the effect is that the bottom pixel is not replaced by the upper pixel, but is mixed with it, weighted by the value of the original color.Also see animation, bleeding through, and overlap.<br><br>Something ? perhaps a layer of paint or some other material, such as wood veneer or gold leaf ? that is laid over or covers another surface. It may also be a transparent sheet like an acetate or cel containing images in some areas areas, which is placed atop another image to be incorporated into it.