“ A Claude Glass - essentially a small, treated mirror contained in a box - is a portable drawing and painting aid that was widely used in the later century by amateur artists on sketching tours. The reflections in it of.
Claude glass: late 18th century mirror carried by tourists. "The device was typically pocket-size, with convex, gray-colored glass. When viewers looked into it, the convex shape pushed more scenery into a single focal point and the color of the glass changed the tones to be more pleasing to the eye by the standards of the contemporary picturesque paintings, which had a limited color palette. The constructed image was thought to be even more beautiful than reality."