CCE Color Measurement & Instrumentation Flashcards
6 cards from real CCE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CCE Color Measurement & Instrumentation flashcards as text
In colorimetry, what does the term 'metamerism' describe?
Answer: Two colors that match under one illuminant but differ under another
Metamerism occurs when two colors with different spectral compositions appear identical under one illuminant but differ under another.
Which CIE standard illuminant is the international standard for color evaluation in graphic arts and proofing environments?
Answer: Illuminant D50
CIE Illuminant D50 approximates 5000K daylight and is the standard illuminant used in graphic arts for color viewing and proofing.
According to ISO 12647, what ΔE tolerance is considered acceptable for color matches in commercial printing?
Answer: ΔE < 2
ISO 12647 specifies that a ΔE of less than 2 (using ΔE 2000) is the acceptable tolerance for color matches in commercial printing.
A spectrophotometer reading gives L*=50, a*=0, b*=0. What color does this represent?
Answer: A neutral mid-tone gray
In CIE L*a*b*, L*=50 indicates medium lightness, and a*=0, b*=0 indicates no chroma, resulting in a neutral gray.
Which proprietary color formula system uses a numbered fan guide to specify spot colors in graphic arts and printing?
Answer: Pantone Matching System
The Pantone Matching System (PMS) is the industry-standard system for specifying and communicating spot colors in graphic arts and commercial printing.
What does a colorimeter primarily measure, in contrast to a spectrophotometer?
Answer: Tristimulus values using three broadband filters
A colorimeter uses three broadband filters corresponding to X, Y, Z tristimulus values to measure color, while a spectrophotometer captures full spectral data.