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Portrait of Jan Six, 1654. Rembrandt van Rijn, with numerous wet-on-wet passages.
Rowing Home, 1890. Winslow Homer. An example of the wet-on-wet technique in watercolor, especially in the sky.

Wet-on-wet, or alla prima (Italian, meaning at first attempt), is a painting technique, used mostly in oil painting, in which layers of wet paint are applied to previous layers of wet paint. This technique requires a fast way of working, because the work has to be finished before the first layers have dried. It may also be referred to as 'direct painting' or the French term au premier coup (at first stroke).[1]

Wet-on-wet painting goes right back to the origins of oil painting, and was used by several of the best Early Netherlandish painters in parts of their pictures, such as Jan van Eyck in the Arnolfini portrait, and Rogier van der Weyden.[2] In traditional painting methods new layers were applied to most parts of a painting only after allowing the previous layer to completely dry. This drying process could vary from several days to several weeks, depending on the thickness of the layer. Work done using "alla prima" can be carried out in one or more sessions -depending of the type of paints used and their respective drying time- but it is mostly done in one session or "sitting" only.[3]

Since the mid-19th century the use of commercially produced pigments in portable tubes has facilitated rapid and on-the-spot painting. Impressionists like Claude Monet and Vincent van Gogh, realists like John Singer Sargent, Robert Henri and George Bellows, and the Abstract Expressionist Willem de Kooning have each in different ways exploited the potential for fluid energy in the application of oil paints.

In the medium of watercolors, wet-on-wet painting requires a certain finesse in embracing unpredictability. Highly translucent and prone to accidents, watercolor paint will bloom in unpredictable ways that, depending on the artist's frame of mind, can be a boon or a burden. [4]

[edit] Television exponents

In recent years the wet-on-wet practice has become well known as the primary method of painting used by such television artists as Bill Alexander, Bob Ross, and Robert Warren. Since colors will usually mix if one is laid over top of another while both are wet, full paintings (requiring at most only a few minutes of detail work after the main work is dry) can be produced in a short period of time – Alexander and Ross could produce an entire landscape in under half an hour on their respective television shows, The Magic of Oil Painting and The Joy of Painting.[5]

[edit] Industrial applications

Forms of wet on wet painting have been in use in industrial applications for some years. The German F.A.L. process used sulphurised linseed oil and was used for some years to paint Post Office vans. With the development of flash primers, it was used by Rank Xerox to paint parts for their copiers. The original clear on base system for automotive metallic finishes used an air drying base. This system, using a flash primer as well, was used for cycle finishes well before it was used for cars.

[edit] References

  1. ^ Art Glossary: Alla Prima painting.about.com
  2. ^ National Gallery Catalogues: The Fifteenth Century Netherlandish Paintings by Lorne Campbell, 1998, ISBN 1-85709-171-X
  3. ^ Art Glossary: alla prima easy-oil-painting-techniques.org
  4. ^ Art 101: Primer in Wet Media blog.artsicle.com/blog
  5. ^ Newman, Julie (2011). "Bob Ross: The Happy Painter". Roanoke, VA: Blue Ridge PBD. http://www.blueridgepbs.org/videos/local-productions/bob-ross-the-happy-painter. 
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