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There is no The One way to use this addon. That is why we encourage you to find the way it works best for you. Addon preferences panel is located under Edit > Preferences > Add-ons.

Toolbar Enabled

Default: true

By default, the Atmosphere tab is in the sidebar of Blender 3D viewport (N key) and "World Properties" tab in Properties panel. Setting this to false will hide the toolbar. Reveal panel by clicking on Atmosphere tab.

Toolbar Label

Default: "Atmosphere"

By default, Toolbar tab for Physical Starlight and Atmosphere is Atmosphere. It might be useful to rename it to something shorter like PSA to reduce space the tab is taking.

Use ACES color space

Default: false

The Academy Color Encoding System1 (ACES) is a color image encoding system created by hundreds of industry professionals. ACES allows for a fully encompassing color accurate workflow, with seamless interchange of high quality motion picture images regardless of source.

Use real world physical values

Default: false

By default, addon reduces atmosphere, sun and stars intensity values to get the feeling it just works, and you don't have to modify extra parameter Exposure in order to get realistic atmosphere. But very important part of this addon is having real world physical values to support visual consistency.