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Perspective and Printing Press - The First Information Revolutions. Perspective. Media. Pigments: minerals or organic. No organic synthetic colors until 19th century. Fresco - pigment on plaster. Tempera - pigment plus water or egg. Linseed oil - 15th century.
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Perspective and Printing Press - The First Information Revolutions Perspective
Media • Pigments: minerals or organic. No organic synthetic colors until 19th century. • Fresco - pigment on plaster. • Tempera - pigment plus water or egg. • Linseed oil - 15th century. • Use of paint as wood preservative very recent. • First ready-mixed pigment and vehicle sold only in 19th century.
Representational Styles • Conceptual - Elements sized or placed according to importance • Polydimensional - Objects viewed from vantage point that best shows features • Perspective • Not automatically seen as “natural” by other cultures • Children have to learn to interpret it
Perspective • Vanishing point • Size reduction with distance • Conventions are cultural and learned.
Development of perspective • Distance cues were known and used, but not systematically • Size - distance relations • Near objects overlap distant ones • Foreshortening • Convergence of parallels (pre-perspective examples are common, but lacked geometrical consistency.)
Convergence of parallels known but lack geometrical consistency
Development of perspective Disasters of 14th century led to graphic depiction of often unpleasant realities. Art climate was ripe for greater realism. Introduction of Ptolemy's Geographia about 1350 re-introduced projection techniques. Use of grids as drafting aids Camera obscura as aid in drawing
Effects of perspective technique • Delight in new technical mastery (Tour de Force) • Discovery of power of close observation and attention to detail • Power of mathematics to explain nature • Power of simple principles to achieve great effects
