Shading and shadowing on Canaletto's Piazza San Marco

Shading and shadowing on Canaletto's Piazza San Marco

Wijntjes, M.W.A.
De Ridder, H.

Industrial Design Engineering

Industrial Design

2014-02-02

Whereas the 17th century painter Canaletto was a master in linear perspective of the architectural elements, he seems to have had considerable difficulty with linear perspective of shadows. A common trick to avoid shadow perspective problems is to set the (solar) illumination direction parallel to the projection screen. We investigated in one painting where Canaletto clearly used this trick, whether he followed this light direction choice consistently through in how he shades the persons. We approached this question with a perceptual experiment where we measured perceived light directions in isolated details of the paintings. Specifically, we controlled whether observers could only see the (cast) shadow, only shading or both. We found different trends in all three conditions. The results indicate that Canaletto probably used different shading than the parallel light direction would predict. We interpret the results as a form or artistic freedom that Canaletto used to shade the persons individually. © (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only

art and perception
illumination perception
pictorial space
shadows and shading

http://resolver.tudelft.nl/uuid:7dc6d63b-a21b-4753-81e1-587527da572d

https://doi.org/10.1117/12.2047854

SPIE

0277-786X

http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1850109

Proceedings of SPIE 9014: Human Vision and Electronic Imaging XIX, San Francisco (USA), 2 Febr. 2014

Institutional Repository

conference paper

(c) 2014 Wijntjes, M.W.A., De Ridder, H.