Those shots are not suitable for backswing.

Shooting a relatively high object is not suitable for viewing angle.

The apparent horizon of elevation angle is low. If you shoot all kinds of outdoor objects at elevation, you can create an extremely low horizon or horizontal line in the picture, so that the messy background can be hidden under the lower horizon. As the background, the sky occupies a considerable area in the picture, with high foreground and prominent subject, which can change the natural proportion of the foreground and background and produce an abnormal perspective effect.

Shooting some upright objects and tall buildings from an upward angle can get the effect of standing upright and piercing the blue sky, and shooting some scenes with people's activities can get the effect of being full of vigor and rising upward.

In portrait photography, elevation can not only highlight the height of the figure, but also correct and make up for some facial defects, such as the width of the bottom or the small ratio of chin to mouth.

When shooting from an oblique angle, the elevation angle is related to the distance. The closer the distance, the greater the elevation angle. The farther the distance, the smaller the elevation angle; According to the specific conditions of different subjects, choosing the appropriate elevation angle can enhance the expressive force of photographic composition. If the elevation angle is not used properly, it is easy to cause serious deformation or make the upright object fall backwards. This composition effect. Will damage the normal image of the subject.