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LIGHT AND VOLUME

LIGHT AND VOLUME. How would you represent the light on an object , for example , on a cone ?. INFLUENCE OF LIGHT IN SPATIAL PERCEPTION. Light is a natural or artificial physical phenomenon that allows us to see and distinguish objects that surround us .

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LIGHT AND VOLUME

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  1. LIGHT AND VOLUME

  2. Howwouldyourepresentthe light onanobject, forexample, on a cone?

  3. INFLUENCE OF LIGHT IN SPATIAL PERCEPTION • Light is a natural or artificial physicalphenomenonthatallowsustosee and distinguishobjectsthatsurroundus. • When light shinesonanobject, itcreatesareas of light and shadow. • Ifthe light changes, theperception of theobjectchanges as well.

  4. TYPES OF LIGHT • NATURAL LIGHT • ARTIFICIAL LIGHT

  5. NATURAL LIGHT • Howdoes natural light change? • Whatfactorshaveaninfluenceonit?

  6. NATURAL LIGHT • Comes fromthesun • The tones changedependingon • The time of day • Theseason of theyear • Theweather • Thegeographiclocation

  7. ARTIFICIAL LIGHT • How can we produce artificial light?

  8. ARTIFICIAL LIGHT • Producedbyhumans • Thesourceshavechangedthroughouthistory. • Fire (bonfire, torch, candlelight, lanterns) • Electricity (fluorescentlights, lamps, electriclanterns, flashlight) • LEDs

  9. THE DIFFERENCE • Thebiggestdifferencebetweenthetwotypes of light isthatthey produce distincttypes of shadows. • Natural light produces parallelrays • Artificial light produces conicrays • Thisisthereasonwhytheshadows are different. • Can youthink of otherdifferences?

  10. Artificial light BAJO CONSUMO FLUORESCENT LIGHT BULB

  11. LED BULB FIREWORKS

  12. FLASHLIGHT (Am E) TORCH ( Br E) SODIUM LIGHTNING CANDLE LIGHT

  13. DIFFERENT POSITIONS OF THE LIGHT SOURCE • Front lighting • Light fromabove • Sidelighting • Backlighting

  14. FRONT LIGHTING • Thereissensation of volume and depthisminimal.

  15. LIGHT FROM ABOVE • Givesus a sensation of tranquility. • Givesus a sensation of realitybecauseitisthetype of lightingwe are usedto. • Insertphotos

  16. SIDE LIGHTING • Creates a sensation of mysteryor drama • Produces a highcontrastbetweentheilluminatedarea and mystery in theshadedarea • Johannes Vermeer • Insertphotos

  17. BACKLIGHTING • We can onlyseethebackground and thesilouettes of the figures

  18. Chiaroscuro • Value describes volume and depth of space In Europe artists of the Renaissance were concerned with showing depth and volume in opposition to the artists of the Middle or “Dark Ages.” • Men of the Renaissance considered their time period to be the Age of Reason and rebirth of artistic and mathematical achievements. • Renaissance artists manufactured the term “Chiaroscuro” to describe how light and dark can imply depth and volume.

  19. The word Chiaroscuro is a combination of two Italian words that mean light and dark. (chiaro (clear, light) + oscuro (obscure, dark) • Atmospheric or Ariel perspective was one of the artistic strategies used in the study of Chiaroscuro during the Renaissance. (Atmosphericor Ariel perspectiveiscovered in depth in thesection “Objective Color Harmony”.)

  20. ValueContrast • Valuecontrast can beencountered in bothcolorful and non-colorful art renderings. • All neutral tones (white, black, all gray tones) are calledachromatic, meaninghaving no color. • All tones thathavesome color are callchromatic. • Youmustconsidertherelationship of valuetoother art elements, like color, line texture and shape. Alltheseelementsmustexhibitsomevaluecontrastin ordertoremain visible.

  21. Light and Shadow • When a mass is exposed to light, a solid object will receive more light from one side than another when that side is closer to the light source. A spherical surface demonstrates this as an even flow tone from light to dark. An angular surface shows sudden contrast of light and dark.

  22. Light Sources and Shadows • A light projected onto an object or figure creates lights, darks, and cast shadows. Your source of light may be the sun, the moon, a light through a window or an artificial light. When several light sources are present the light and dark tones vary and are less predictable.

  23. Two Kinds of Shadows • Cast Shadow: when an object blocks a light source it casts a shadow. A cast shadow is not a solid shape but varies in tone and value. • Form Shadow: A form shadow is the less defined dark side on an object not facing the light source. This shadow has softer less defined edges than a cast shadow.

  24. THE LIGHT SIDE IN TWO PARTS • Highlight: The lightest spot or streak is where the light strikes the subject in exactly the middle of the light side between the shadow edge and the edge of the object. A highlight can be shiny and crisp on a glass or metallic surface, orfuzzy and muted on a dull or textured surface. • Light middle tones: To avoid confusion, “always”keep the values on the light side lighterthan the values on the dark side.

  25. Reflected light • If the object being painted is sitting on a white table, the light from the table reflects back onto the object and makes the shadow side lighter.

  26. Manet’s Painting, “The Railway” shows value contrast in composition, but the sense of shallow space is emphasized by a lack of a single light source.

  27. Whatkind of lightninghavethesetwoimages?

  28. Notan • Notan is a Japanese word meaning dark-light. The principle of Notan is the interaction between positive (light) and negative (dark) space. This interaction is confirmed by the ancient Chinese symbol of Yin and Yang.

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