Why does purple change color when shooting? What is the reason?

In fact, color temperature is white balance. For non-professionals, it is a bit reluctant to be familiar with the color temperature values in various environments. The color temperature of some common light sources is: standard candle light is 1930K (kelvin-day); Tungsten lamp 2760-2900K；; The fluorescent lamp is 3000 k; Flash 3800 k; The sunshine at noon is 5400 k; Electronic flash 6000 k; The blue sky is 12000- 18000K. It is recommended to shoot with a Canon camera, because the color of the instant preview photo is closest to that seen on the computer. I took a few true colors, and the effect was the best after fine-tuning with PS on the computer.