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The degree of metamerism between two samples can be reduced by

  • A.selecting a more sensitive observer to judge
  • B.bringing their spectral curves closer together
  • C.increasing the number of crossover points between them
  • D.measuring under a different single illuminant

Answer: B

Only a smaller spectral difference reduces the sensitivity to conditions. Everything else merely changes which condition happens to reveal it. The property lies in the spectral difference. Assessment reveals rather than removes it.

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