X-Rite X-Rite User Manual

Contents

X-Rite X-Rite User Manual Manual pdf 45 page image

X - R i t e e X a c t ™ I n s t r u m e n t433. Tap the Measure Standard icon or tap the Standard icon to access the screen wherea standard is measured or selected from the library.4. Measure the standard, use the last reading, or select from the Pantone library.5. Tap the Back icon to return to the measurement screen.6. Measure samples to compare to the standard.7. View results.Metamerism FunctionThe phenomenon where two colors appear to match under one light source, yet do not matchunder different light sources. Two such colors are called a metameric pair. Up to threeIlluminant/observers can be compared to the current Illuminant/observer parameter. These willshow up in the results as MI1, MI2, and MI3.Metamerism Function SettingTap the Metamerism button and set the illuminant/observer combinations for metamerismfunction measurements. By determining the metamerism index you define the mutual colormodification of two colors when the illuminant changes. You can set a maximum of three testilluminants.- Tap the observer icon to alternate between 2° and 10°.- Swipe the illuminant wheel up or down to select the desired illuminant.- Set the illuminant to “off” if all three are not required.Metamerism MeasurementA metamerism measurement displays the index values for up to three illuminant/observercombinations.NOTE: The illuminant and observer parameters for metamerism have to be set before using thisfunction.1. Select the metamerism function.2. Measure or select a standard.3. Measure the sample.4. View measurement results.Average DE valueSimulated color of standardFunction, illum/obs, andMeasurement ConditionselectedSimulated color of sampleSample measurements