What are the factors that affect depth of field? Details?0?3

What are the factors that affect depth of field? Depth of field changes with the focal length of the lens, aperture value, and shooting distance. There are three factors that affect depth of field: 1. Depth of field is inversely proportional to the length of the focal length, that is, the longer the focal length of the lens, the shorter the depth of field. 2. Depth of field is proportional to the distance of the subject. The closer the digital camera is to the subject, the shorter the depth of field. 3. Depth of field is inversely proportional to the size of the aperture series. If the focal length of the lens and the shooting distance of the object remain unchanged, the larger the aperture, the shorter the depth of field. Through the above understanding of depth of field, we can get the following rules for the perspective of human eyes when viewing distant and near scenes (the method of using lines to express the perspective rules of the picture space). one. Objects vary in distance, and people perceive them to have different sizes. The closer they are, the bigger they are, and the farther they are, they are smaller. The farthest point will disappear on the horizon. two. Regularly arranged lines or lines parallel to each other get closer and gather together as they get farther away, and finally converge into a point and disappear on the horizon.