---
title: "IBL with Dome Light"
canonical: "https://documentation.chaos.com/space/VMAX/113585484/IBL%20with%20Dome%20Light"
format: markdown
---
This page contains examples illustrating the use of Image-based lighting with V-Ray Dome Light.

> Macro (anchor)




## **Example: IBL (Image-Based Lighting)**

---

V-Ray uses importance sampling to trace more rays in the directions where most of the light is coming from. This ensures speed and quality that were never before possible with pure gathering GI methods.

- Easy setup for image-based lighting (IBL).
- Importance sampling of the dome texture for fast and clean results.
- Support for photon mapping for fast and accurate caustic effects.

In the following example, we show how this works with an HDR image. You can reposition the texture by enabling the **Lock texture to icon** option in the Dome light rollout and rotating the Dome light. The background is set up as a [V-Ray Bitmap Texture](https://docs-chaos.atlassian.net/wiki/spaces/VMAX/pages/113575830). 


---


---


---


---



> Macro (anchor)



## **Example: IBL and Caustics**

---

---


---

![image](media://d34bc535-2a9b-4c94-bfdb-f42106913748)



---



---


Set the **Caustics multiplier** to 30.0, the **Search distance** to 5.0 units, and the **Max density** to 0.2cm.