What does the so-called shifting axis mean in photography?

Tilt-shift photography refers to the works created through the shift lens, and the photos taken are as special as miniature models. The function of shift lens was originally used to correct the perspective problems caused by ordinary wide-angle lens, but it was later widely used to create photographic works that changed the focus position of depth of field. Moving mirror photography is to make the real world fake and make the photos fully show the feeling of "artificial city".

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The main feature of axis-shifting camera lens is that the main optical axis of the whole camera lens can be translated, tilted or rotated on the premise that the plane position of the camera body and the film remains unchanged, so as to adjust the perspective relationship of the shot image or focus the whole area. The reference clear image field of the camera lens with shifting axis is much larger, which is to ensure that the main optical axis of the camera lens can still get a clear image after translation, tilt or rotation. Axis-shifting photographic lens is also called "TS" lens ("TS" is English "Tilt &；; The abbreviation of "shift", namely "oblique shift"), "oblique beat", "shift beat" and so on.

After the 35mm single-lens reflex camera adopts the shifting camera lens, the single-lens reflex camera also has the function of controlling the viewing angle by adjusting the leather cavity of the large-scale combined camera, thus expanding the application range of the 35mm single-lens reflex camera. In the field of professional photography, the lens of shifting axis camera plays a considerable role.