![]() 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. There is a natural variation in consumer displays-even displays of the same type!-so the operating modes of the colorimeter are no more accurate that these variations allow.However, because it is essentially a non-contact design whose newer generation filters are installed in a sealed environment, it will age more gracefully than previous models, such as the Display 2 and Chroma 5. The instrument's accuracy may decline as it ages.There will always be some unit-to-unit variation.The same calibration is applied to all Display 3's. The standard modes that the factory Display 3 ships with are based on a generic calibration from a reference device.The inaccuracies of a filter-based colorimeter arise from a variety of sources. Its accuracy depends only on the bandwidth, sensitivity, and resolution of the device. A spectroradiometer does not rely on filters as a way of mimicking human color vision, but rather measures the spectra of a display directly. Otherwise, you cannot achieve the desired accuracy with different display types. However, accurately matching these complex curves using any reasonably affordable filters requires correction with a reference spectroradiometer. In an attempt to accurately model human color vision, in 1931 the CIE defined the standard observer, which is characterized by three color matching functions, shown below.Ī filter-based colorimeter attempts to mimic human color perception by matching these curves. To understand more about this, it is important to first understand the source of errors in tristimulus colorimeters. ![]() This way, the $269 colorimeter can approach the accuract of a $17,000 2nm spectroradiometer. Selecting a measurement mode automatically applies the appropriate correction. When you initialize the meter within ChromaPure you are asked to select the measurement mode that represent the display types for which the meter has been corrected. These corrections are built-in to the ChromaPure license file. Using a professional 2nm sptroradiometer, we correct each Display 3 PRO for 13 different display types. We have developed a version of the Display 3, which we have named the Display 3 PRO, that offers substantially enhanced accuracy across a wide range of displays. ![]() This version of the meter is indicated by the presence of B in the serial number. The Rev B version of this meter differs from the original version by including new hardware/firmware features that allow for refresh rate detection and synchronization at the time of meter initialization. It is also an easy device to use because it requires neither a dark reading calibration nor external drivers (support is built-in to Windows).ĭespite this, it is an affordable mass-market device whose tolerances fall short of professional color analyzers. The i1 Display Pro III (Display 3) is based on a completely different design and offers a level of performance profoundly superior to the Display 2, indeed profoundly superior to any colorimeter at anywhere near the MSRP price of $269.įor a full review of the Display 3 colorimeter, see New Gear. In many ways, it is not useful to think of this meter as simply a successor to the Display 2, which was the dominant affordable colorimeter on the market for several years. Officially known as the i1 Display Pro III, by any definition X-Rite’s colorimeter is a disruptive technology. ChromaPure with Display 3 PRO (Rev B) Colorimeter
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