Relight is only available in the Thea Render Presto engine.

Relight allows you to create infinite images from a single render. When relight is enabled, every light in the scene can then be modified (intensity, color and status) and create different lighting setups in post production.
Every relight setup can be saved in the relight editor panel as a snap and then loaded back to darkroom for further editing or exported as an image file.

If you want to learn more about relight, have a look at this video

Relight_01 Relight_02 Relight_03 Relight_04


  • Select Presto from the engine list
  • Make sure that you are in production mode
  • Open the Thea tools panel and switch to the render settings tab
  • Tick the relight checkbox

Relight is supported only by the Presto engine in production mode.


The relight editor tab can be found in the settings panel. After the completion of the rendering, you can find all the lights of the scene in the editor.

Relight user interface
Relight icons

(1) Snapshot: Click this button to create a snapshot of the current relight settings. A new thumbnail will be created at the bottom of the editor
(2) Reset: Resets all the controls and values back to the default ones
(3) Enable - disable all: Click this button to enable or disable all the lights in the scene at once
(4) Enable - disable light: Turns on/off the selected light
(5) Solo: Isolates the current light
(6) Name: Displays the name of the light - light group.
(7) Intensity: The intensity of the light
(8) Color: The color of the light

Learn more about how Thea Render groups light based on the scene setup in this video.


Relight group is a group of lights that appear as one controller in the editor. The lights are grouped based on the following:

  • Instanced lights appear as one controller.
    To remove a light from the group, right click on it and select "Make Unique"
  • Every unique light has a unique controller
  • Mesh lights are grouped by their emitting material