Perspective distortion / Sloping horizon

If the subject contains parallel lines, it is especially important to hold the camera parallel to the subject. If the camera is tilted too far, perspective distortion can occur.

Particularly in architectural photography you try to reduce perspective distortion. However, this effect can be used intentionally for artistic purposes.

To avoid undesired perspective distortion and a “sloped horizon“ it is recommendable to use a spirit level (e.g. can be inserted into the hot shoe – another useful item in photography), especially for images captured using a tripod. A spirit level facilitates camera positioning immensely.

Some cameras provide the option of using helping lines in the viewfinder or on the display screen. This is a useful tool to decipher “perspective distortion” or a “sloping horizon“. High quality single-lens reflex cameras can sometimes be equipped with the respective viewfinder focusing screens.

Perspective distortion and a sloping horizon can be rectified in image post-processing. Ensure that there is a border on the image while it is being captured as image editing results in trimming the image. The following images illustrate this.

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