How Do I Change the IES Light in v-Ray SketchUp?

Are you working with v-Ray for SketchUp and want to know how to change the IES light? Look no further! In this tutorial, we will guide you through the step-by-step process of changing the IES light in v-Ray for SketchUp.

What is an IES Light?

An IES (Illuminating Engineering Society) light is a widely used lighting format that simulates real-world lighting conditions. It is commonly used in architectural and interior design projects to accurately portray the behavior of light sources.

Step 1: Selecting the IES Light

To change the IES light in v-Ray for SketchUp, start by selecting the desired light source in your scene. You can do this by either clicking on the light directly or by selecting it from the “Scene” tab in the v-Ray Asset Editor.

Step 2: Opening the Light Settings

Once you have selected your desired light source, navigate to the “Lights” tab in the v-Ray Asset Editor. Here, you will find a list of all lights present in your scene.

Note: If you cannot see the v-Ray Asset Editor, go to “Extensions” > “v-Ray” > “Asset Editor” to open it.

In this list, locate and click on the name of the light you want to change. This will open up its settings panel.

Step 3: Changing the IES File

In the settings panel of your selected light source, navigate to the “IES” section. Here, you will find an option labeled “IES File”. Click on this option to open a file browser window.

Note: Make sure you have an IES file ready to use. If you don’t have one yet, you can download it from various online sources or create your own using specialized software.

Step 4: Loading the IES File

In the file browser window, navigate to the location where your IES file is saved. Select the file and click “Open” to load it into v-Ray for SketchUp.

Note: It is important to choose an appropriate IES file that matches the type of lighting effect you want to achieve. Different IES files produce different lighting patterns and intensities.

Step 5: Adjusting IES Light Parameters

After loading the IES file, you can further adjust its parameters to fine-tune the lighting effect in your scene. The available parameters may vary depending on the specific light source you are working with.

  • Intensity: Controls the overall brightness of the light source.
  • Color temperature: Sets the color temperature of the light source, allowing you to achieve warm or cool lighting effects.
  • Falloff: Adjusts how quickly or gradually the light intensity diminishes with distance.

Note: Experimenting with these parameters can help you achieve the desired lighting effect for your scene. Don’t be afraid to try different settings until you get it just right!


You have successfully changed the IES light in v-Ray for SketchUp! By selecting a different IES file and adjusting its parameters, you can now create various realistic lighting effects in your scenes. Keep practicing and exploring different options to enhance your rendering skills!