PS Correction of building tilt

correcting the tilt of a building with PS

Q: I used to take a lot of pictures of tall buildings, but these pictures are obviously deformed. The top of the buildings in these photos are converging inward, how can I avoid such a phenomenon in future filming?

When shooting a building with a wide angle, we notice that the building will be more or less deformed, and this article does not discuss how these variants are produced, but focuses on how to correct these deformations. The following figure is a typical example: it is obvious that the buildings in the diagram are tilted.

A: The most straightforward solution is to spend money on a moving axis lens (also known as a perspective correction lens), but these lenses are very expensive. When using a wide-angle focus lens or a wide-angle end of a zoom lens, stretching the distance between you and the object will help reduce the barrel distortion caused by the wide-angle lens.

To minimize the convergence of the lines brought by large, wide-angle lenses, keep the level of the camera and building flat as much as possible. Find a higher position, which improves the camera's level of shooting, but make sure you get a full picture of the building. Do not under the building, look up to shoot upward, which will lead to obvious building lines converge upward perspective effect.

These intuitive solutions, far from building or taking a high seat, may not be a good way to implement. Fortunately, you can find tools for correcting perspective and lens distortion in most image editing software.

Classification:

• PS Getting Started Tutorial