On focusing and focusing of SLR cameras (SLR focusing)

1, photography xiaobai buys a SLR. Most of them use autofocus. The distance between subjects is constantly changing. It's okay to use a small aperture, but it won't change much But with a large aperture, the focus changes greatly. If you move it, the focal plane will move with you.

2. There are single autofocus, artificial intelligence autofocus and artificial intelligence servo autofocus. Single autofocus is mainly used for autofocus of static subjects, and the camera is also fixed by tripod. This autofocus mode is good for shooting products in the studio and shooting scenery outdoors.

3. The problem of power loss or accidental defocusing caused by multiple focusing is avoided. Also, the subject is out of focus. Using single autofocus mode, first adjust the focus, and then compose the picture. After shooting, enlarge the camera to see if it is out of focus. It will be safer to take more photos.

4. Both artificial intelligence servo autofocus and artificial intelligence autofocus can be continuously autofocused, but artificial intelligence autofocus can also be automatically switched to single autofocus, that is, the situation of the subject is intelligently recognized. When the subject is stationary, it becomes single autofocus. If it is aligned, it will no longer focus. Once the focus misalignment is detected, it will trigger the artificial intelligence servo autofocus.

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