If your photo lacks a compelling sky, AI Sky Replacement makes replacing it easy. The tool is designed to work with flat or blown out skies, but can often be adjusted to work with most skies by refining the sliders. Using the power of artificial intelligence, the AI Sky Replacement tool automatically analyzes an image, identifies where the sky begins, and ends, then seamlessly replaces the sky to create a realistic look.

Standard Controls

  • Sky Selection. Choose from a library of sample skies to get familiar with the tool. Be sure to load your own skies as well by choosing the Load Custom Sky Image option. See this article for more details on using your own skies.
  • Horizon Blending. This smooths the transition between the current horizon and the new one. Since there is often a soft transition here, using a higher value is often more photo-realistic.
  • Horizon Position. Luminar attempts to automatically align the horizon of the original photo with the new sky’s horizon. You can override this alignment and shift the image up or down to taste.
  • Relight Scene. The AI Sky Replacement tool relights the entire photo so the lighting and colors of the original image match the lighting and colors of the sky. This slider adjusts the intensity of the relighting effect.
  • Sky Global. This affects how the texture is mixed into the scene. A higher value will increase the amount of new sky that is added.

Advanced Controls

  • Close Gaps. This slider fixes small details and holes that were not filled by the replaced sky initially. You may need to adjust this if the image has fine details such as trees or wires.
  • Sky Local. This slider is useful to control the overlap of the new sky with the original clouds. This slider is designed to influence how much the original clouds are replaced.
  • Sky Defocus. This slider will defocus the sky and is useful when a shallow focus is used with a foreground object.
  • Flip Sky. This option will flip the new sky texture to change the direction of the image. This option is useful when the photo has shadows in the scene that you are trying to match.
  • Sky Temperature. Use this slider to warm or cool the new sky texture to match your needs.
  • Sky Exposure. This option controls the exposure for the new sky texture and allows you to change the look and feel easily.


FAQ:
I’m trying to use Sky Replacement and the sliders are greyed out. How come? If the AI Sky Replacement is disabled there are two likely causes. First is that the skies are not visible enough in the image. The other cause is that you’ve applied the effect to an adjustment layer. In this case, be sure to use the original image layer or a Stamped layer for the AI Sky Replacement tool.

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