Photographic current

There are only three colors of light, namely yellow, green and red, and all colors can be harmonized through these three primary colors. Each point of the photosensitive element (ccd or coms) of a SLR will form three currents after being irradiated with light, representing yellow, green and red respectively. Then, by analyzing the strength of these three currents through the camera's cpu and conversion software, we can get all kinds of colors that can be seen by the naked eye. Theoretically, these colors can be 65,438+06.7 m from blackest to whitest. That is,16.7 million colors. The higher the iso of the camera is adjusted, the greater the current generated on the photosensitive element, and the more difficult it is for the camera to accurately analyze the real color you shot, that is, the resolution becomes worse. From the highest 16.7m to 1, it can be understood as noise, so the higher the iso is adjusted, the better the resolution of the camera is. The smaller the color contrast, the greater the 16.7m: 1, which is easy to understand. Tolerance should refer to color, which is a concept with resolution.

I wonder if I can make you understand this.