Calman also shows the color temperature and gamma curve Figure 11 and Figure 12.A brief introduction to Calman’s workflow and verification process can help to understand that the monitor can be verified by Calman software to certify that the monitor has achieved a certain level of color and grayscale correctness. Calman Verified certification is a certification program developed by Portrait Displays Inc., using Calman software to evaluate whether a display has met the criteria for video post-production editing and reviewing purposes. The certification evaluates color temperature, gamma curve, and delta E. The criteria of the color difference between the test data of 19 colors and the reference color is less than 2. BenQ Professional Monitors, for example, PV270, SW270C, SW321C, SW271, PD3220U, PD2720U, PD2700U and extra, have been awarded the “Calman Verified” certification to ensure out-of-the-box color accuracy. It certifies BenQ Professional Monitors’ ability to exhibit the exact color and grayscale level as defined by signal sent to the monitor.