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Knowledge Center

What is CalMAN Verified?

BenQ Color Technology Lab
2019/11/01

This article provides an overview of CalMAN software, developed by Portrait Displays. We'll also cover CalMAN software and how the "Verified" validation process works. Let's start with a look at types of CalMAN software.

Figure 1: Different Versions of CalMAN Software

CalMAN Ultimate is the master product of all other CalMAN software combined. Thus, it has the most applications and hardware support in the line. CalMAN Video Pro is for professional home theater calibrators and installers. This software covers projector and flat-panel calibration. It also offers three licenses for computer display calibration. CalMAN Video Pro also supports lots of professional hardware. Users can learn more by generating custom reports for each calibration. CalMAN Studio is SpectraCal’s complete calibration suite for studio professionals. It calibrates Grade-1 reference monitors, computer monitors, and client-viewing flat panels or projectors.

Analysis and Validation by CalMAN

CalMAN guides users step-by-step through their easy-to-use workflow. Additionally, you can find the directions on the software narrative page. During calibration, CalMAN shows color patches under review and reference color patches for comparison. It also marks the color coordinates of the measured values, as shown in Figure 2.

The upper side of each color patch is the data that the calibrator reads. The lower side is the reference data. Measurement results of the color patch appear on the Delta E 2000 result graph. See Figure 3. It also displays the CIE 1976 u’v’ diagram on the screen, as shown in Figure 4. CIE is the International Commission on Illumination. It is an international authority on light, illumination, color, and color spaces.

CalMAN suggests checking the picture before and after with CalMAN Eyeglass. See Figure 5. To do this, open the CalMAN Eyeglass program and load your preferred image. Then you can compare the corrective effects of a monitor calibration LUT on a loaded image. You can switch between the Original view and the 3D LUT Processed view in CalMAN Eyeglass. Or you can click the split bottom to review both on one image.

CalMAN also provides a verification report. Verification tests include Illuminance, Delta E max, Delta E avg., Gamma, and Correlated Color Temperature. The test results generate in a color chart with a red or green light to show pass or fail. Review the failed case below.

The maximum and average Delta E indicates success or failure with a red or green light, as shown in Figure 6. Delta E values of different colors display in a bar chart, as shown in Figure 7.

The passed case shows the green light, as shown in Figure 8 and Figure 9.

The verification report displays the position of the 19 test points in the CIE 1931 chromaticity diagram. This helps end-users visualize the current test situation, as shown in Figure 10.

CalMAN also shows the color temperature and gamma curve Figure 11 and Figure 12.

CalMAN software tests monitors against criteria for video post-production editing and reviewing purposes. It evaluates color temperature, gamma curve, and Delta E. Monitors earn CalMAN verified status by achieving set levels of color and grayscale correctness. The color difference between the test data of 19 colors and the reference color must be less than 2. BenQ Professional Monitors such as SW270C, SW321C, SW271, PD3220U, PD2720U, and PD2700U earned “CalMAN Verified” status. This ensures out-of-the-box color accuracy. It certifies BenQ Professional Monitors exhibit exact color and grayscale levels.

Now you have a better understanding of CalMAN software. We've gone over types of software and verification processes. This insight explains the value of BenQ Professional Monitors earning this prestigious status. This is why people who count on color accuracy count on BenQ.

*The images are from CalMAN Ultimate software UI

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