How to deal with the background in portrait photography?

In portrait photography, the relationship between the characters and the background must be clearly defined, so that the background serves the characters and plays its due role as a foil. To deal with the background, there are usually the following methods: 1. Use aperture. If the background is cluttered, you can open a wider aperture to reduce the depth of field to blur the background and make the characters stand out. 2. Use a long focal length lens. Using a long focal length lens can reduce the background range included in the picture and expand the proportion of the area occupied by the characters. 3. Use shooting angles. Taking upward shots, overhead shots, or changing the shooting point can simplify and avoid cluttered and unnecessary backgrounds, and help highlight the characters. 4. Use distance to adjust the distance between the character and the background to highlight the character. For example, the farther away a character is from the trees behind them, the more prominent they are. 5. Use of light. The use of different lights can produce different background effects. For example, using shadows as the background can highlight bright characters; using backlighting can not only hide the messy background in the shadows, but also outline the characters and separate them from the background; use the sky to capture the characters. Eye-catching silhouettes and more. 6. Use color. Through colors of different hues and brightness, the characters can be in sharp contrast with the background, thereby highlighting the characters. 7. Use the frame to make the characters fill the picture as much as possible, thereby reducing the background area accordingly and highlighting the characters. 8. Use the environment. Choose scenery that echoes the characters as the background to express the characteristics of the environment and highlight the characters. For example, the furnace is used as the background to photograph the operations of steel-making workers; experimental instruments are used as the background to show the scientific research activities of scientific and technological personnel, etc. 9. Eliminate scene interference. When dealing with a background with objects, pay attention to whether there are some objects in the background that are in line with the characters and affect the performance of the characters. For example, if the horizon line in the viewfinder happens to be at the neck of the person, or if there are tree trunks or telephone poles standing above the person's head, these phenomena need to be avoided.