The only instrument capable of this level of precision is a 5nm or better spectroradiometer. SMPTE requires a reference instrument to have a minimum accuracy of ☐.002 for the measurement of xy chromaticity coordinates at any luminance above 3 fL. However, the vast majority of consumers cannot afford a true reference device, which are very expensive. ChromaPure provides an Meter Correction module for just this purpose. Of course, the best way to minimize these errors is to use your own reference spectroradiometer to correct the Display 3 for each calibration session on a single display. The Display 3 PRO virtually eliminates 3 of the 4 sources of error and lessens the fourth for a small fraction of the cost of a true reference device. Our PRO version of the meter will cut this source of error considerably. Taken together, these four sources of inaccuracy-generic factory calibration, unit-to-unit variation, effects from aging, and a lack of consistency among displays-result in a device that, on average according to our tests, typically deviates from a reference spectroradiometer up to about 5-6 dE (CIELAB). The calibration tables of the factory Display 3 can only be derived from the general performance characteristics of the display type, not the specific display being calibrated. ![]()
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