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A pop up diagram from a nineteenth century treatise by Butler Williams, demonstrating the relationship between the viewing position, the picture plane, the object and the visual rays (images copyright © Russell Light). Williams, Butler (1843) - 'A Manual for Teaching Model-Drawing from Solid Forms, the Models Founded on those of M. Dupuis, Combined with a Popular View of Perspective', 2nd edition, John W. Parker, London, 1852.

This site is intended as a resource for perspective drawing. It is aimed principally at students of architecture, but the techniques should also be relevant to other subject areas. There is more to be added to the site and the history section is currently incomplete, but there should already be enough material for the site to be of value. A lot of the research into the literature of the subject was carried out in the 1990s. I thought it would be useful to place all this in the public realm, but some of it may need updating. Please provide feedback if you think there are any omissions or if the techniques are not clear. Paolo Uccello - Perspective Study of a Chalice, c. 1430-40 (source: Wikimedia Commons) A reconstruction of Uccello's chalice. This CAD model is based on exactly the same principles of perspective geometry (image copyright © Russell Light)