Why does the sunlight angle in the photo have such a big angle?

We know that photos taken by digital cameras often have color cast; For example, photos taken in a fluorescent room will appear green, while photos taken in the shadow of the sun will appear blue. Generally speaking, if the white balance setting of the digital camera is incorrect or the lighting environment is complex when shooting with the digital camera, the automatic metering system of the camera itself can't correctly judge which white balance setting to use, and it is easy to appear the phenomenon of color cast. The color deviation of the photo is due to the incorrect white balance correction of the digital camera or the influence of light source and environmental color, which leads to the deviation from the inherent color of the subject. Therefore, the color cast correction of photos is to restore the inherent color and make the picture more realistic (except for photos where the photographer deliberately creates an artistic atmosphere, such as photos with added color or low color temperature). How to judge the color cast of digital photos We often hear people's comments on the color cast of digital photos. One is warm, the other is cold, and a certain brand camera generally prefers a certain color. The so-called color cast is the color that the photo deviates from the objective nature. In the face of a digital photo with color cast, it may be really difficult to accurately judge the hue degree of color cast for a while. To adjust, but there is no way to start. You said it was a color cast, but he didn't look a color cast. You look yellow, but he feels red. Because color vision is a subjective problem, everyone's perception of color is different, but the wavelength of light is definitely objective. The color of photos on the computer is quantified by numbers, and the color cast is easy to judge and adjust in Photoshop. There are several methods. We can take three points for color cast correction, including highlights (generally above 245 RGB values) and dark parts (generally below 10 RGB values), gray parts generally take white shadows or gray points of the picture (RGB values are preferably between 100-200), and gray parts do not take skin color or inherent colors, that is, red and yellow that can be clearly distinguished by naked eyes. Note that the three values of RGB are as close as possible or not much different, and then look at the data. As long as the data of R/G/B is large or small, it can be said with certainty that this photo is the complementary color of the large value color or the small value color. Finally, you can use the Info panel in PhotoShop to directly observe how many values are biased. Due to the influence of environmental color and other factors, after adjustment, we can take more points to judge whether the points are accurate or not, and finally achieve the accuracy of color. No matter what color your monitor is biased to, as long as the RGB values of the photos are equal, the color cast of the photos themselves will not exist, so you don't need to judge whether it is color cast by feeling, and then keep consistent with the color management of the output company, and the output photos will be OK!