Unity - Manual: Make the camera perspective oblique

By default, the view frustum is arranged symmetrically around the cameraA component which creates an image of a particular viewpoint in your scene. The output is either drawn to the screen or captured as a texture. More info See in Glossary’s center line, but it doesn’t necessarily need to be. You can make the frustum oblique, which means that one side is at a smaller angle to the centre line than

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“Oblique”