Tilt (photography)
The English word Tilt or Tilten (German: tilting, tilting or swiveling) describes the possibility of tilting a camera lens relative to the image plane . In this way, an inclined object plane can be sharply imaged. This inclined object plane becomes the “ focus plane ” of the photographic image .
The condition for optimal sharpness is that Scheimpflug's rule is adhered to. This means that the object plane, objective plane ( main plane / s) and image plane intersect in a common straight line . Trying to control this by mechanical means would be laborious. The photographer finds the right value for tilting the lens on the basis of the impression of sharpness of the image of the object on the focusing screen or similar.