How it works...

Every setting we've seen so far has been included in the engine in order to give the artist as much creative freedom as possible, and thankfully this is something that happens throughout the engine. However, these tools in particular owe their presence to specific effects that happen in the world of photography or cinematography and as such, we need to be aware of when to use them and how to use them.

Beyond that, I'd like to talk a little bit more about one thing that we've tweaked: the Manual Exposure group of settings. Even though we've already seen how they work, it is interesting to note how we can check that the engine behaves in a physically based way through them. If you think about it, changing from the automatic to the manual exposure control is kind of like changing from shooting in automatic or manual in a photographic camera. Because our lighting was a bit dark, (after all, the HDRi we are using was taken in the interior of a house) it makes sense to increase the ISO and make the shutter speed a bit slower since we need the camera to compensate for the lack of light. It is just another nudge that reminds us how everything tries to be grounded on real life, making life easier if we already know how things should behave.