How to Set Up an On-Set Reference Kit for VFX and HDRI Capture (2025 Guide)

If you’re working on professional VFX, 3D rendering, or virtual production, capturing accurate on-set reference is essential. A well-prepared reference kit ensures consistency in lighting, color, and exposure between your live-action footage and CG elements. In this guide, we’ll walk through how to build a reliable on-set reference kit using three core tools: a chrome ball, a gray ball, and a ColorChecker chart.

What’s in a VFX On-Set Reference Kit?

A complete VFX lighting reference kit typically includes:

  • Chrome Ball (Mirror Ball): Captures 360° environmental lighting and reflections for HDRI creation.
  • Gray Ball: Shows light direction and falloff; helps evaluate exposure and lighting balance.
  • ColorChecker Chart: Ensures accurate color matching in post-production through white balance and RGB neutrality.

How to Use the Kit On-Set

To capture your reference material effectively, follow these steps:

  1. Mount the chrome and gray balls securely, at eye level to the subject.
  2. Place the ColorChecker near the talent or primary subject, facing the camera.
  3. Use a DSLR or mirrorless camera with RAW mode and exposure bracketing enabled.
  4. Shoot still frames before or after each take with CG elements.

What to Do in Post-Production

Each component of the kit provides critical reference for compositing:

  • Use the chrome ball to extract HDRI for image-based lighting (IBL) in your 3D software.
  • Use the gray ball to analyze lighting intensity, falloff, and shadow behavior.
  • Use the ColorChecker to correct color and match your footage across shots.

Build Your Kit

At RefBall Studio, we offer complete reference kits in multiple sizes for different workflows—from solo creators to large production teams. Shop our VFX Ball Sets and elevate your lighting reference game today.

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