The Definitive Guide to DaVinci Resolve's 3D Keyer Part 2 - Solving Common Problems With Chroma Keys

Definitive Guide To Resolve’s 3D Qualifier, Part 2 – Problem Solving

September 25, 2024

Daria Fissoun shows how to fix chroma key issues like hair, spills, and color matching for clean keys using Resolve's 3D qualifier.


Series

Learn how to tackle common chroma keying problems (and how to fix them on-set)

With a good understanding of how the 3D Qualifier and its many parameters can be used to pull a clean key, this Insight explores more color grading techniques for preparing and fixing tricky chroma selections. The Insight will demonstrate how to deal with dull chroma screen colors, soft focus, and retrieving objects that are the same color as the chroma selection.

Working with tricky chroma footage can be a great educational tool for colorists and compositors who shoot or work on-set. By understanding what can cause issues in post, you can take precautious steps during the shoot, like:

  • Asking talent in advance not to wear chroma colors or accessories
  • Not using a lens with a shallow depth of field
  • Shooting at a higher shutter speed to avoid motion blur
  • Lighting performers with a complementary gel (magenta for a green screen; yellow for a blue screen) if they are wearing or carrying reflective surfaces
  • Ensure the chroma screen is adequately lit
  • Keep the talent as far from the screen as possible to avoid chroma spill

Key takeaways from this Insight

By the end of this Insight, you should understand how to:

  • Saturate the chroma color on a dedicated node branch to prepare the shot for a clean key
  • Create a background color when compositing for a clearer view of the key edges
  • Handle shallow focus green screen footage
  • Retrieve chroma-colored objects when they are impacted by the Despill tool.
  • Bernd’s Chroma Key Series

Questions or Comments? Leave a comment!

Is this Insight useful to you? Let us know! if you found this helpful, do you have something to add, or do you have more questions you need answered?

– Daria


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