References / Curvilinear
Street in five-point
The two-point street reference redrawn in five-point: buildings bow, the sky is a circle.
Open in the Curvilinear 5 & 6-Point GridDownload PNGLesson: Curvilinear Perspective Explained: 4, 5 & 6-Point Drawing
What to look at
Verticals curve toward zenith and nadir on the rim; the horizon curves because the camera is tilted 5° up.
The buildings' tops converge to the zenith even though the camera is barely tilted: curvilinear always shows both.
Open the two-point street reference beside it for the flat version.
The camera
| Lens | 180° angle of view (curvilinear) |
| Camera height | 1.6 m above the floor (standing) |
| Rotation | 25° to the scene's axes |
| Tilt | 5° up (three vanishing points) |
| Objects | box 8 × 14 × 12 m · box 8 × 10 × 9 m · box 8 × 12 × 18 m · box 8 × 16 × 15 m · figure 1.75 m · figure 1.75 m |
| Floor | 1 m squares |
Open the reference in the tool to move the camera, change the lens, or add your own objects at real sizes; the share link keeps your version. Draw over the PNG at 30–50% opacity in any app with layers.