Lighting & rendering · Intermediate

Image-based lighting

Lighting a 3D scene with a panoramic image of its surroundings

Also called IBL

What is image-based lighting?

Image-based lighting, or IBL, lights a 3D scene using a panoramic image of a real or rendered environment. Every part of the image acts as a tiny light, so models pick up believable brightness, color and reflections from their surroundings with very little setup.

Think of it like this

It is like setting a model down in a real place and letting that whole place light it, sky, walls and windows included.

Where it fits in a 3D project

  1. Create
  2. Surface
  3. Rig
  4. Animate
  5. Render
  6. Export

Render: Lighting the scene and turning it into images or video.

How image-based lighting works

  1. 01A 360-degree image of an environment wraps around the scene like a sphere.
  2. 02Each direction of the image adds light in its own color and brightness.
  3. 03Shiny surfaces reflect the image; rough ones pick up its soft, blurred glow.
  4. 04Rotating the image changes where the brightest light comes from.

Image-based lighting vs HDRI

PropertyImage-based lightingHDRI
What it isA lighting techniqueAn image file
JobLights and reflects the sceneSupplies the light data
NeedsAn environment image, ideally HDRA renderer that reads it

They work together: an HDRI is the most common image used for image-based lighting.

Where image-based lighting is used

  • Product renders with realistic reflections
  • Placing CG objects into real photos and footage
  • Quick, natural lighting while developing a look

Beginner tip

Use an HDR image, not a regular photo. A normal JPEG clips bright areas like the sun, so the light looks flat and shadows lose their direction.

Terms related to image-based lighting

Image-based lighting FAQ

What is IBL in 3D?
IBL stands for image-based lighting. It means using a panoramic image around the scene as the light source, instead of placing individual lamps.
How do I set up image-based lighting in Blender?
Open the World settings, set the background color to an Environment Texture and load an HDRI. The image now lights and reflects in the scene; add a Mapping node to rotate it.
Can image-based lighting cast shadows?
Yes. Bright areas of the image, such as the sun, act like lights and cast shadows. A small, very bright sun gives sharp shadows; an overcast sky gives soft ones.

Updated October 29, 2026 · Browse all 3D terms