One point perspective contains one vanishing point on the horizon line. One-point perspective exists when the painting plate (also known as the picture plane) is parallel to two axes of a rectilinear (or Cartesian) scene – a scene which is composed entirely of linear elements that intersect only at right angles. If one axis is parallel with the picture plane, then all elements are either parallel to the painting plate (either horizontally or vertically) or perpendicular to it. All elements that are parallel to the painting plate are drawn as parallel lines. All elements that are perpendicular to the painting plate converge at a single point (a vanishing point) on the horizon.
A high-angle shot (HA) is a shot in which the camera is physically higher than the subject and is looking down upon the subject. The high angle shot can make the subject look small or weak or vulnerable while a low-angle shot (LA) is taken from below the subject and has the power to make the subject look powerful or threatening. A neutral shot or eye-level (EL) shot has little to no psychological effect on the viewer. This shot is when the camera is level or looking straight on with the subject.
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