We are active users of technology - I am teaching and you are learning online. When we're submerged in this kind of environment, it's sometimes easy to forget that what's known as the digital divide still exists. Our access to technology gives us advantages in accessing information that many around the world do not have. This information graphic from the International Monetary Fund illustrates that

And in academia especially, only a privileged few have access to certain types of scholarly writings.

There is one exception. Another little ritual everyone gets used to on a set. At the end of a scene, when all of the shots are done, the location sound recordist will whisper to the 1st AD, and the 1st AD will call out: “Hold for room tone!” And then everyone stops in their tracks and holds still, remaining completely silent for at least 60 seconds.

The person responsible for all of this is the cinematographer, sometimes known as the director of photography (DP). Their job is to translate the director’s vision into usable footage, using all of the photographic skills listed above and only after making a series of crucial decisions which we will get to below. It is one of the most technical jobs in cinema, requiring as much science as it does art: