Expert Calibration is a calibration process we implement for QN900A, QN95A andQN90A models.First, it is important to note that every TV manufactured at Samsung undergoesa very strict calibration process.The standards set by our production and quality control team are very high andExpert Calibration isn't a feature to "correct a mistake" for our TVs by any means.Expert Calibration is a feature that we provide to ensure the best color accuracyfor our most premium models: QN900A, QN95A & QN90A.※ During the manufacturing process, all TVs go through calibration and an importantOf calibration is color accuracy. A TV with Expert Calibration applies additional coloraccuracy tests to ensure the most accurate of colors. The benefit for the consumer is thatthey can enjoy color reproduction that would A satisfy professionals.