Try
viewer.scene.highDynamicRange = false;
https://cesiumjs.org/Cesium/Build/Documentation/Scene.html?classFilter=Scene#highDynamicRange
Omar had helped me with this in the past. I think this was all added in 1.52.
Try
viewer.scene.highDynamicRange = false;
https://cesiumjs.org/Cesium/Build/Documentation/Scene.html?classFilter=Scene#highDynamicRange
Omar had helped me with this in the past. I think this was all added in 1.52.
Thanks Ashley. Its worked.