What is a shift lens? What's the effect of shooting?

A lens that moves the optical axis to adjust the viewing angle. The function of the shift lens is not only to correct the perspective deformation, but also to adjust the focal plane position. In general, the focal plane of the camera is parallel to the film plane, and the scene in the focal plane is clear and the Jiao Wai is blurred when shooting with large aperture; If the focal plane is adjusted by moving the axis lens, the sharpness can be changed. Obviously, shifting lens is most suitable for architecture, landscape and commercial photography. EF shift lens has no AF function.

This kind of lens is designed to be movable because it has a special device that can move or tilt, and the focal length is generally 28mm or 35 mm

Shift-axis lens can be used to correct perspective problems. When you take a photo, the location is much closer to the bottom of the building than to the top of the building, and the following will happen. The whole building image is compressed, and the roofs are also gathered together, which will cause the building to collapse. This situation can be avoided if a shift lens is used. It's been copied! ! !