You will have to find this one in your manual. In a nutshell if the human eye looks at a sheet of white paper in the morning it looks white because our eye adjusts to whit automatically but the camera will see the paper as having a blue cast. If the same bit of paper was held up in front of our eye at lunchtime and again at sunset our eye still compensates and sees the paper as white... https://www.mongsangviewstudio.com/