Separates image into foreground (sharp) and background (blurry) Guides attention to sharp parts ... Aperture designed so blades meet at obtuse angle. Robert Kosara ...
Example: Cholera in London 1854, John Snow, Broad Street ... 'dark room' Light-tight room. Hole on one side. Projection surface on other side. Pinhole camera ...
David Bailly, Self-Portrait with Vanitas Symbols, 1651. Robert Kosara ... http://www.uni-bayreuth.de/ Light is changes. direction on the. interface between ...