- Underdrawing
Underdrawing is thedrawing done on a painting ground before paint is applied, for example, animprimatura or anunderpainting . Underdrawing was used extensively by 15th century painters likeJan van Eyck andRogier van der Weyden . These artists "underdrew" with a brush, using hatching strokes for shading, usingwater-based black paint, beforeunderpainting andoverpainting with oils.Cennino D'Andrea Cennini (14th century most likely) describes a different type of underdrawing, made with graded tones rather than hatching, foregg tempera In some cases, underdrawing can be clearly visualized using
infrared reflectography because carbon black pigments absorb infrared light, whereas opaque pigments such as lead white are transparent with infrared light.What is remarkable about some historical examples of underdrawing, in - for example - the
Annunciation (van Eyck, Washington) or theArnolfini Portrait , is the extent to which artists made radical alterations to their carefully laid designs.References
Infrared reflectography and spectroscopic analysis of paintings http://www.amolf.nl/research/biomacromolecular_mass_spectrometry/molart/Surfacespec.html
External links
* cite web |publisher=
Victoria and Albert Museum
url= http://www.vam.ac.uk/collections/paintings/galleries/materials/underdrawing/index.html
title= Underdrawing
work=Paintings & Drawings
accessdate= 2007-08-21
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