How to Change Global Exposure and Gamma in Blender

Adjusting global exposure and gamma in Blender allows you to control the overall brightness and contrast of your scene without having to manually tweak individual light sources or materials. These global adjustments are managed through the Color Management panel within the Render Properties tab, applying changes uniformly to both the real-time 3D Viewport and final rendered outputs.

Steps to Adjust Global Exposure and Gamma

  1. Open the Properties Panel: Locate the Properties window on the right side of the default Blender layout.
  2. Navigate to Render Properties: Click on the Render Properties tab, represented by the camera icon.
  3. Open Color Management: Scroll to the bottom of the list and click the arrow next to Color Management to expand the section.
  4. Adjust Exposure:
    • Locate the Exposure slider.
    • Increasing the value brightens the scene linearly, simulating a camera sensor capturing more light.
    • Decreasing the value darkens the entire scene.
  5. Adjust Gamma:
    • Locate the Gamma slider directly below the Exposure setting.
    • The default value is 1.0.
    • Lowering the value darkens the midtones and increases overall contrast.
    • Raising the value lifts the midtones, resulting in a flatter, brighter image.

Important Considerations

  • Real-Time Feedback: Changes made in the Color Management panel are non-destructive and immediately visible in both the Material Preview (if using scene lights) and Rendered viewport shading modes.
  • View Transform Interaction: The exposure and gamma controls apply on top of your selected View Transform (such as AgX, Filmic, or Standard). Ensure you have selected the appropriate color profile before finalizing your exposure and gamma adjustments.
  • Compositing vs. Color Management: Unlike compositor nodes, global Color Management settings automatically affect the final render output, the 3D viewport, and any image sequences saved with color management applied.