One of the things we're going to need to understand it's really important that it's what's called the exposure triangle. Now we've been talking about exposure, we've been showing you blink keys and histograms, and the light meter. But what we need to understand is that there are free elements. And we're going to go through each one in detail and explain each one to you. There's free elements or free controls or free leavers we can use to control the amount of light coming in to a camera. So if you imagine that we've got these free leavers, we've got 123 there's three different leavers, each one of these leavers is going to affect the amount of light coming into the camera and our exposure.

So we want to capture those whites and we want to capture those blacks but there's free different leavers to do it. And that's what frozen People because those free leavers have been named in really complicated ways. And then the measuring to determine how much of each lever to pull is completely different and what's different on each one. To get that exposure to get that histogram in the right place, all we need to do is pull one or another up, pull down these levers, and each one of these levers is either going to increase the amount of light or decrease the amount, the light that's coming into the camera, and we'll explain how that works. In the next section.