To take good photos, choosing the focus position is key. Shooting different scenes, different depths of field, or creating different artistic conceptions requires different focusing positions
To achieve an overall clear pan-focus effect
When shooting scenery photos with a clear overall picture, in addition to reducing the aperture and shooting with a wide-angle focal length, the focusing position is generally selected at the front 1/3 of the picture, because the depth of field behind the focusing point is twice that before. This rule can be used for various combinations of apertures and focal lengths. At the same time, remember that the smaller the aperture, the shorter the focal length, and the farther away from the subject, the greater the depth of field
When the subject fails to focus successfully
When the subject cannot successfully focus, an object at the same distance can be sought for focus. As long as the focusing object and the subject are at the same distance without changing the aperture, focal length and shooting distance, the sharpness of the subject can be guaranteed
When shooting running water with slow shutter
When shooting running water with a slow shutter speed, you should focus on a still object, such as plants, rocks, etc. nearby, so that the whole scene can form a sharp contrast focus position after a long exposure period
When the distance between close and long view is large
When the distance between close shot and long shot is large, the focus position should be selected on the close shot. Usually, close-up shots will be larger and eye-catching, so it is best to keep clarity. Therefore, priority should be given to the focus position
