References / Lenses & camera heights

Same scene, 85 mm

The same scene at 85 mm from 12 m: compressed, nearly an elevation drawing.

Same scene, 85 mm: The same scene at 85 mm from 12 m: compressed, nearly an elevation drawing.
Open in the Perspective Box GeneratorDownload PNGLesson: Perspective Basics: Horizon, Vanishing Points and Terms

What to look at

Vanishing points far off the page; edges are almost parallel.

Objects 4 m apart in depth look stacked against each other.

Long lenses make crowds dense and streets short; this is the telephoto look.

What this scene is for

The long lens of the set: the same three objects from 12 m, with the vanishing points so far out that the edges are almost parallel. Use it for portraits, for distant subjects, and when a drawing should feel observed from across a room rather than stood in.

The mistake it settles

Drawing telephoto compression as flat. The depth is still there — the door is still 4 m behind the crate — but it reads as stacking rather than receding. The way to show it is with overlap and tone, not convergence, because there is barely any convergence left to draw.

The camera

Lens85 mm on full frame
Camera height1.6 m above the floor (standing)
Rotation32° to the scene's axes
Tiltlevel (verticals stay vertical)
Objects1 m cube · 1.75 m figure · 2.1 m door
Floor1 m squares

Measured off this render

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

Angle of view23.9° across (85 mm on full frame)
Horizon422 px from the top, 56% of the image height
Depth-axis vanishing point1,307 px beyond the left edge
Width-axis vanishing point4,393 px beyond the right edge
ObjectDistanceHeight on the renderBelow the horizon
1 m cube12 m264 pxall of it
1.75 m figure14.1 m395 px91%
2.1 m door16.1 m415 px76%

Draw it from these numbers

  1. Rule the horizon across the sheet at 56% of the picture height — 422 px down on this 754 px render. Every other line in the scene is measured from it.
  2. Two vanishing points on that line: 1,307 px beyond the left edge, and 4,393 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 1.75 m figure at 14.1 m: 395 px tall, with 91% of it below the horizon. That share is the camera height divided by the object's height (1.6 ÷ 1.75 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.

Question

Why do long lenses make things look flat?

Because you are far away, so the difference in distance between the near and far parts of the subject is a small fraction of the total. At 12 m an extra 4 m shrinks a thing by a quarter; at 4 m the same 4 m halves it. Flattening is a distance effect that the lens only reveals.