Light Mix and Animation

[BigAl3D]

I understand how to use the Light Mix system and have in the past with still images. Pretty amazing tool. My question is, can I render an animation once and, utilizing Light Mix, save out the same animation with two separate light setups so I don't have to render the animation again?

Let's say I want the same animation with a bright sun coming in the window, and I also want an evening animation as well.

[maru]

Sure, for example you can render the whole sequence in EXR format with all LightMix layers. You can then mix them together using ADD operation in the software of your choice. You can then animate any of the layer parameters as you wish in your software, for example: make some layers more or less transparent during the animation (this will make lights stronger or weaker), change their colors, etc.