The charm of black and white images? Different from the nature of color

The essential difference between a black-and-white image and a color image is that a black-and-white image uses a layer of photosensitive material to record the brightness change of the whole light without recording its color information, while a color image uses three layers of photosensitive material to record the brightness change of the three primary colors of light respectively, and the information of the three primary colors is mixed to restore the color of light. Therefore, the essence of black and white images is one exposure, while color images are three exposures.

The charm of black-and-white image lies in its perfect record of light and dark details in the image, which makes the image more textured and gives people a strong visual impact. At the same time, black-and-white images can also be used as a special recording method to express the heaviness of images, such as in documentaries.