Add Default Lights To Scene

Right-click a viewport label. > Configure > Viewport Configuration dialog > Rendering Method tab > Rendering Options group > Turn on Default Lighting and choose 2 Lights (to activate the Add Default Lights To Scene menu item). > Views menu > Add Default Lights To Scene

This command displays the Add Default Lights To Scene dialog, which provides options that let you convert the default scene lighting into actual light objects.

The default lighting for viewports consists of a single key light, positioned in front and to the left of the scene. In the Viewport Configuration dialog, you can change this to two lights: the key light and a fill light, positioned behind and to the right of the scene. Both these default lights behave as omni lights.

A single default light is linked to the camera and moves when you change your viewport point of view.

Two default lights are placed opposite to each other.

A, the key light is in front of the object, on the upper left side, while B, the fill light is behind on the lower right side.

This command is unavailable unless you configure viewports to use two lights. When viewports use two lights, and you choose this command, the lights are added to the scene as omni lights. You can add either the key light, the fill light, or both.