Vertical shift is the most popular: upward, especially when photographing high buildings, so that the camera does not have to be tilted upward; and downward for product shots at an oblique angle or also for shots from high locations such as towers or mountains so that the camera does not have to be tilted downward.. When the camera is tilted either upward or downward, perpendicular lines are not imaged as perpendicular, but rather converge upward or downward, which is very pronounced in
These converging lines can be prevented with the
The rotary mount, however, also allows horizontal movements or a shift in a slanted direction, e.. g.. to be able to take a frontal photograph without any distortion from a lateral location or a location with a slanted offset if this would otherwise be impossible due to an obstacle or potential reflections..