Photo histogram

Before you know the histogram, you should know the logic of color matching, which is to adjust the color and tone of the photo. Tone is the brightness of the photo/tone is the deviation of color.

A clear understanding of the histogram can help the photo to set the hue and tone more quickly.

Photos consist of pixels with different brightness and colors. After removing the color, the picture is only black, white and gray.

Black, white and gray are not color information, but lightness information.

Histogram can clearly show the tone of a photo, whether it is dark, bright or medium.

Color is a comprehensive display of RGB histogram, which determines the tone trend of photos.

The number of different colors will determine the tone of the photo, and the decrease of red will increase relative to cyan.

White is not without color information, and any pixel has the same amount of information as red, green and blue. Similarly, pulling any color will change.