Education

Academy Award Winning Calibration Sensor Technology - Built-In Calibration

How ColorEdge Monitors Achieve Industry-Leading Precision

EIZO’s ColorEdge monitors with built-in calibration sensors are developed and manufactured entirely in-house. See how they achieve the colour precision and consistent image display needed for creative fields.

Calibration Using EIZO’s Unique Built-In Sensor

Precise Calibration Automated for Convenience

Even after a monitor has been fully calibrated for maximum precision out-of-box and stabilises quickly after being turned on, it will still need to be recalibrated at regular intervals to maintain accuracy over time. To do this, a sensor is used to measure the state of the monitor and adjust the values from the reading to match a predefined standard or specified target via dedicated software. There are two main methods of calibration: hardware and software calibration. While software calibration is widely accessible for any display device, this process modifies the signal from your video card to map the colour output, which provides inconsistent results and often losses in gradation steps. ColorEdge monitors uses hardware calibration, which controls the hardware of the monitor directly by utilising its LUT (look-up-table) to offer higher precision and better gradation characteristics. This is the preferred method for colour-critical applications.

Using an external sensor for regular maintenance inherently comes with the caveat of greater downtime, as the monitors need to be “checked out” for a period of time, turned on, stabilised, and then recalibrated one-by-one – the calibration process alone could take up to 10 minutes per unit for conventional solutions. This is especially a concern for studios and post production facilities which use multiple colour critical monitors throughout their creation pipeline. Recognising this as an issue, EIZO introduced a solution to address this with its ColorEdge CG Series in 2010 (first model: ColorEdge CG245W). This marked the debut of the first monitors in the world to have a colour calibration sensor built directly into the unit.The ColorEdge CG Series built-in calibration sensor eliminates the need for a third-party colourimeter when it comes time for recalibration. With it, the monitor can be set to automatically recalibrate at designated times, even when the monitor is not being operated – this saves time and costs of recalibration and eliminates related downtime.

Developed and Manufactured In-House

EIZO develops and manufactures its ColorEdge monitors in-house, including the built-in sensors of the CG Series. Using EIZO’s expertise in colour science, the ColorEdge CG Series built-in sensor is calibrated using a high-end spectrophotometer to achieve high precision when deployed to end-user environments. Thanks to EIZO’s patented DUE technology, ColorEdge monitors achieve high uniformity across the screen so no matter where the sensor is placed, precise measurements are taken. The built-in sensor of the modern ColorEdge lineup is positioned inconspicuously in the top bezel to minimise any imposition on the creator’s visual line of sight. EIZO’s engineers conduct extensive testing and research of the mechanical components of the sensor as well, ensuring the mechanism that moves the sensor into place operates correctly throughout the life of the monitor. Furthermore, the sensor is carefully positioned at a nearly imperceptible distance from the screen’s surface so as not to allow ambient lighting to interfere with readings. Operators can rest assured the sensor will measure accurately, even when not in a darkroom.

Accurate Measurement of HDR

As HDR content creation continued an upward trend in the film, streaming, and broadcasting industries, sensor technology needed to adapt so measurability of much higher and lower brightness values was possible for new HDR-supported display devices. EIZO’s modern built-in sensor technology supports accurate measurability of HDR values. This allows for accurate readings of extremely high (1000 cd/m2) and low brightness levels across the screen – typically a challenge due to high and low brightness levels’ susceptibility to saturation and noise respectively. The built-in sensor’s optical design and measuring circuit were developed to combat this and ensure consistent screen characteristics under the new HDR standards for content creation. This technology is implemented in the ColorEdge PROMINENCE CG3146 – the world’s first true HDR reference monitor with a built-in calibration sensor.

More from the site

Story, Product

Mehrdad Abedi

Photographer and chief flight attendant Mehrdad Abedi gives us a fascinating look inside the cockpit of a commercial airliner – and a view out the cockpit window, too