Charles Amédée Philippe Van Loo, ‘The Camera Obscura’, 1764, National Gallery of Art, Washington, D.C.
overall: 88.6 x 88.5 cm (34 7/8 x 34 13/16 in.)  framed: 120.7 x 114.9 x 12.7 cm (47 1/2 x 45 1/4 x 5 in.)