A convex dark or colored glass that reflects a small image in subdued colors, used by landscape painters to show the tonal values of a scene.
- ‘The purpose of the Claude glass, which Corot used, was to help artists distinguish brightness contrast in the object depicted to the exclusion of other aspects of visual experience.’
- ‘The must-have for 18th-century tourists and amateur artists was a tiny tinted convex mirror called a Claude glass (named after 17th-century landscape painter Claude Lorrain).’
- ‘Tourists, inspired by the Picturesque movement, started coming in the 18th century, peering at sublime mountain scenery through their Claude glasses.’
- ‘The more portable cameras were undoubtedly used, along with Claude glasses, by the amateur.’
Named after the French painter Claude Lorrain.