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Visual tolerance ellipsoids in CIELAB are generally

  • A.smallest for dark saturated colours in the space
  • B.elongated along the chroma direction at high chroma
  • C.spherical and of equal size throughout the space
  • D.elongated along the lightness axis at every position

Answer: B

Chroma differences are tolerated more readily than hue differences at high chroma. Hue is the most critical direction in most commercial assessments. Chroma is tolerated more readily than hue. Ellipsoids stretch along the chroma direction.

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