How to control the depth of field through aperture?

Depth of field is actually a depth that can accurately image. The most common is portrait shooting, with blurred background and prominent characters; Or macro shooting, only a little area is real, and everything else is blurred.

Generally speaking, we will consider controlling the depth of field through the aperture. But the depth of field is not only determined by the aperture. Besides the aperture, we also need to choose the focal length to control the depth of field. Depth of field is actually related to aperture, focal length and shooting distance. The larger the aperture value, the greater the depth of field; The longer the focal length, the shallower the depth of field; The smaller the shooting distance, the smaller the depth of field.

When shooting landscape films, I suggest choosing aperture priority mode, which corresponds to the A position of the camera. Then choose the aperture of F9 or F 1 1. This has two advantages. First, the depth of field can be enlarged, making the tolerance higher. Secondly, F9 or F 1 1 can generally get better picture quality. When shooting at macro, we can also use aperture priority. A typical case of macro shooting is that the lens is very close to the object being photographed. Because the shooting distance is very close, this will lead to a shallow depth of field, which will make focusing a very difficult thing. If the focus is not accurate, it will lead to the place we want to shoot is not real. So you can adjust the aperture value as much as possible, so you can get a tolerant depth of field. Finally, when shooting portraits, it is also recommended to choose aperture priority mode. In this way, a shallow depth of field can be obtained, so that the background can be blurred appropriately, the theme can be highlighted, and a better depth of field effect can be obtained.