Placing lights is just half of the work, and we need to achieve an attractive and believable interior lighting. The next step is to control what those lights will produce, which will be shadows. In the previous recipes, we learned how we can preview the shadow produced by the spotlight and also the different shadow qualities that are available, but this recipe is going to teach you how to tweak the shadows using the Shadow effect.
To set up the spotlight's shadows, perform the following steps:
Open the Photo mode and place the camera in a position where you can see the spotlight and its shadow that is formed.
In the Photo mode, to see the shadow produced by the spotlight, you need to add the Global Illumination effect.
Click on the New effect button, and from the World tab, select the Global Illumination effect.
Keep the default settings for the Global Illumination effect because...