Car box, three-quarter, 50 mm

What to look at

Front face to one vanishing point, side to the other; the wheels would be ellipses on the two axle lines.

Camera at 1.3 m puts the horizon at roof height: you see a sliver of the roof and none of the underside.

At 50 mm the far end shrinks gently; compare the 28 mm reference.

What this scene is for

A saloon-sized box — 4.5 × 1.8 × 1.5 m — at 11 m on a 50 mm lens, from a camera at 1.3 m. This is the brochure angle, and the box is the right starting point for a car drawing: get the box right and the body panels have somewhere to sit.

The mistake it settles

Drawing the car body before the box. A car is a subtle shape wrapped around a simple one, and almost every wrong-looking car drawing has a wrong box underneath it — usually too short in the wheelbase and too tall in the cabin. Draw the box, put the wheels on its axle lines, then carve.

The camera

Measured off this render

Taken from the same camera model the tool draws with, on the 1340 × 754 PNG above.

Draw it from these numbers

1. Rule the horizon across the sheet at 44% of the picture height — 332 px down on this 754 px render. Every other line in the scene is measured from it.
2. Two vanishing points on that line: 198 px beyond the left edge, and 3,321 px beyond the right edge — far enough out that you should match the grid angles instead of chasing it.
3. Set the scale from the 1.8 × 4.5 × 1.5 m block at 11 m: 254 px tall, with 87% of it below the horizon. That share is the camera height divided by the object's height (1.3 ÷ 1.5 m), and it is the same for every object of that height anywhere in the picture.

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.