...
All the types have these common options:
- Enable: will allow us to completely turn the light off or on.
- Target the option will enable or disable the target. If you enable the target, it will be created 1.5m away from the emitting object.
- Use Ghost Bsdf: this option avoids the emitting object from blocking light rays from other lights so, if you place it at a window opening it will also let the environment light in (the emitting object won't cast shadows). Also, if you are using multilight and turn this light's intensity down to zero, the emitting object will turn invisible instead of black.*
- Hidden To Camera: this option will make the emitting object invisible to the camera, but it will still cast light. If you combine this option with "Use Ghost Bsdf" you will get an invisible object that will still illuminate the scene.
- Hidden To Refl/Refr: with the two previous options, you will get an almost invisible object, but it will still be visible in the reflections of other objects or through the refraction of transparent ones. This option will make the MxLight object also invisible in the reflections and refractions of other objects. If you turn the three last options on, you will get a completely invisible object that will still illuminate the scene.
...
- The Area type will generate an emitting square of 50x50cm with a target by default. This will only emit light from one side in the direction of the target. The emitting geometry can be converted to a sphere, in which case the target is disabled. Depending on the type of Emission, the options change. It can be by Color, by Temperature or by using an image.
Different Emission modes for Area type
...