Wide-angle lens visualizations

Compare the viewing sphere, perspective plane, and stereographic plane. Drag to orbit; scroll or pinch to zoom.

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Show in the scene
Viewing sphere — unwrapped
Perspective plane
Stereographic plane
Projection models and formulas Diagrams and radial mapping formulas for perspective, stereographic, equidistant, equisolid-angle, and orthographic lenses

The interactive scene shows perspective and stereographic constructions. Both image planes lie at z = −2. Perspective rays start at the origin; stereographic construction lines start at the unit sphere’s north pole, z = 1.

Learn about lens mapping functions