---
title: "VRayLightingAnalysis"
canonical: "https://documentation.chaos.com/space/VMAX/113575399/VRayLightingAnalysis"
format: markdown
---
This page provides information on the V-Ray Light Analysis Render Element.


## **Overview**

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## <span style="color: #000000">**Parameters**</span>

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<span style="color: #000000"> </span>

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### **Example**

This example shows the **False Colors** and **Grid Overlay** Display modes.



## **Notes**

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- Illuminance values shown over glass and mirror objects represent illuminance of the glass or mirror surface and not on the surfaces seen through the glass or mirror. The result can appear noisy or be shown as a zero value. The reason is that such materials do not reflect light diffusely and V-Ray computes the illuminance values with low precision or may skip illuminance calculations completely. To ensure correct results, it is recommended to use the default V-Ray GI settings, with optionally increased Light cache subdivs (e.g. 2000) and higher Light cache retrace threshold (e.g. 4.0).
- For more information on the Lighting Analysis tools and comparison cases, see the *[Lighting Analysis with V-Ray ](https://docs-chaos.atlassian.net/wiki/spaces/THEORY/pages/116719649)*page.