References / Streets & buildings
Narrow alley at 20 mm
A 4 m alley between two tall walls at 20 mm with a figure and a bin, camera turned 15°.
Open in the 2-Point Perspective GridDownload PNGLesson: Perspective Basics: Horizon, Vanishing Points and Terms
What to look at
Near the edges the walls splay: this is the cone of vision being exceeded, honest but dramatic.
The near vanishing point is close to the centre because the camera is only turned 15°.
The figure at 6 m is small against the walls; the bin at 9 m smaller still.
The camera
| Lens | 20 mm on full frame |
| Camera height | 1.6 m above the floor (standing) |
| Rotation | 15° to the scene's axes |
| Tilt | level (verticals stay vertical) |
| Objects | box 3 × 30 × 9 m · box 3 × 30 × 11 m · figure 1.75 m · box 0.6 × 0.6 × 0.9 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.