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  1. 1. Metamerism Why colours go wrong. David Robinson April 2009
  2. 2. What we see <ul><li>Indoors one colour </li></ul><ul><li>Outdoors a different colour </li></ul>
  3. 3. Different Light <ul><li>Energy form different sources </li></ul><ul><li>Daylight varies across visible spectrum </li></ul><ul><li>Incandescent increases steadily into the red </li></ul>
  4. 4. Response of the eye <ul><li>Variable response based on wavelength </li></ul><ul><li>Different parts of the eye cause different responses </li></ul>
  5. 5. The Science
  6. 6. How do we solve <ul><li>Use a light booth </li></ul><ul><li>Use south facing natural light </li></ul>
  7. 7. Questions <ul><li>???? </li></ul>