What do you mean by brightness?

The brightness of a picture refers to the distribution of bright and dark areas in the picture. The contrast between light and shade leaves a deep impression on people, and at the same time, it can effectively convey the theme and artistic conception of the picture.

In photography, the brightness of the picture is controlled by adjusting the exposure time, so that the main body in the picture can be better highlighted and expressed. In painting, it is necessary to use techniques such as gray tone and blooming to express the relationship between light and shade in order to strengthen the expressive force of the picture.

The contrast between light and shade directly affects the overall effect and expressive force of the picture. We can achieve the effect of highlighting the main body of the picture and shaping the artistic conception of the picture by enhancing the contrast between light and dark. At the same time, the contrast between light and shade is also one of the aesthetic feelings of the picture. The subtle relationship between light and shade can not only attract the audience's attention, but also arouse their deep feelings.

In actual creation, the painter should flexibly use the contrast between light and shade to achieve the performance effect required by the picture. At the same time, we should also be careful not to make the picture too dark or too bright, which will affect the look and feel of the picture.

The relationship between light and shade can be the theme of the picture or the technique of the picture. When the theme of the picture is the relationship between light and shade, the painter expresses the light and shadow effects by describing the changes of light and shade in the picture, such as silence in the moonlight, despair in the rainstorm, faith ignited in a coma and so on. When the relationship between light and shade is a technique, the painter will show different emotions and styles with the help of the gray tone and smudge of the picture.

In a word, the relationship between light and shade plays a very important role in the picture. It is not only the aesthetic source of the picture, but also one of the keys to the expressive force of the picture.