Note that this guide was originally created for use with the Built-in Render Pipeline in Unity 2017.3. For information on adapting this guide for use with the Universal Render Pipeline (URP) and the High Definition Render Pipeline (HDRP), see Update: believable visuals in URP and HDRP.
Before starting to create final Assets and approach lighting for a Scene, you need to figure out your lighting strategy. Altering your lighting strategy late in development has a high impact on your workflow. Taking the time to get this right before you enter production saves time overall, and allows you to achieve better performance and higher visual fidelity.
As with all development, there’s almost always a trade-off between the benefits and impacts of one setup over another. There are times, however, where certain technologies give you options to mitigate these trade-offs within specific constraints. Knowing each feature’s trade-offs allows you to choose what’s best for your project.
A typical daytime Scene with outdoor areas has the following lighting components