Discussion
Consider the following statements about metamerism.
1. The two samples have different spectral reflectance curves.
2. They give identical tristimulus values under one condition.
3. They will match under every illuminant and observer.
Answer: C
Correct answer: 1 and 2 only
Statements 1 and 2 are the definition: different spectral curves, identical tristimulus values under one specified condition. Statement 3 describes the opposite case - a pair matching under every illuminant and observer has the same reflectance at every wavelength, which is an unconditional or spectral match and by definition not metameric.
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