Poor depth quality at a distance over 2 meters

Hello!


Currently, I'm working with front TrueDepth camera. I'm trying to use depth maps at a distance over 2 meters. At that distance the overall error is about 5%: point-cloud becomes 5% further or closer, than it really is. It is impossible to use such data for accurate calculations. Tested on 10 different iPhones. Is this characteristic known? How far are the camera data still accurate?


Thank you!