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Taking Color-Difference Measurements
Use the procedure described below to measure the difference between the sample color and
a target color. You can select any of four color-difference displays: (a) ∆Ev ∆x ∆y, (b) ∆Ev ∆u’
∆v’, (c) ∆Ev ∆u’v’ or (d) ∆X ∆Y ∆Z.
Setting the Target Color
You can set the target color values in either of two ways.
1 Measure a source, and use the measurement results as the target.
2 Key in the target values manually.
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1 Using a Measurement Result as the Target
1. Measure the color of a source as described under “Taking Color
Measurements” (page 14). When the display shows measurement
results that you feel are satisfactory for use as your target values,
press the HOLD button to hold these results.
2. Press [∆].
◆ The display changes to show color-difference parameters.
● You can now press [∆] again to change the display mode.
Each press cycles you to the next mode, as shown in the
illustration.
● If you have previously set a target, the display shows the
difference between the new measurement and this pre-
viously set target.
Sample Display
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