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Underdrawing is a preparatory drawing done on a painting ground before paint is applied, [1] for example, an imprimatura or an underpainting. Underdrawing was used extensively by 15th century painters like Jan van Eyck and Rogier van der Weyden .
In art, an underpainting is an initial layer of paint applied to a ground, which serves as a base for subsequent layers of paint.Underpaintings are often monochromatic and help to define color values for later painting.
In the Middle Ages, metalpoint was used directly on parchment for the underdrawing of illuminated manuscripts or model books. On uncoated parchment (and paper), silverpoint is particularly light in value. However, since the 14th century, silverpoint was used more successfully on prepared supports.
Underdrawing is drawing underneath the final work, which may sometimes still be visible, or can be viewed by modern scientific methods such as X-rays. Most visual artists use, to a greater or lesser degree, the sketch as a method of recording or working out ideas.
Modern techniques such as X-rays and infra-red reflectograms often enable lower layers of paint and underdrawing to be seen, and reveal pentimenti, or changes of mind by the artist in the course of work. [2] [3]
Leonardo da Vinci's Vitruvian Man (c. 1485) Accademia, Venice. Drawing is a visual art that uses an instrument to mark paper or another two-dimensional surface. The instruments used to make a drawing are pencils, crayons, pens with inks, brushes with paints, or combinations of these, and in more modern times, computer styluses with graphics tablets or gamepads in VR drawing software.
It was widely used in Classical Antiquity and the Middle Ages for painting, and during the Renaissance it was often used on the rough initial layer of plaster for the underdrawing for a fresco. The word came to be used both for the pigment and for the preparatory drawing itself, which may be revealed when a fresco is stripped from its wall for ...
Imprimatura for plein air studies. In painting, imprimatura is an initial stain of color painted on a ground. It provides a painter with a transparent, toned ground, which will allow light falling onto the painting to reflect through the paint layers.