So far, I've talked about setting exposure using lens aperture and shutter speed. But how do you calculate exposure? In other words, how do you know what is the right amount of light? Well, you have a tool in the camera to help you, and it's called the light meter. In fact, you have three of them, and although they do the same thing, they each do it in a different way. The default mode on most cameras is multi segment metering. Now. Different manufacturers call it by various names, but the process is the same. The meter takes light data from various areas of the viewfinder based on the cleverly designed matrix or grid. From this data, it forms a pattern, which it compares to a database of patterns taken from historic real life images. And it looks for a match. Imagine a policeman trying to match a set of fingerprints. The camera is doing much the same thing. Then, when it finds a match, it uses the historic exposure information to calculate the exposure for the current scene is a highl...
y sophisticated bit of technology. On most, the time is very accurate, but it does have a floor multi segment metering is designed to give you a meter reading that will record the subject almost exactly as you see it. But photography isn't about making records shots. It's a creative art, and sometimes you need a tool that lets your creativity flow. On. That tour is a spot meter now in spot metering mode, the light meter takes a reading from just a tiny portion. The viewfinder. Which part of the viewfinder depends on your specific camera but is usually linked to either the active A F sensor or the center one. This lets you be highly selective in choosing the area of the scene that you exposed for on. That's where creativity comes in. So let's see how this changes things. This image was taken with the camera set to multi segment metering. It's OK. It's a nice record short of the lighthouse, but that's about it. Here's the same scene. No photographed in spot metering mode is much more dramatic. So what did I do differently? What I've done here is using the spot meter in the camera. I've meet it off his bright areas sky in the background, knowing that the meter is going to ignore this banker shadows going up the lighthouse, causing them to under expose. And is that under exposure? That gives me my silhouette. So this is just one example of how the different metering modes help you move away from photographing straight record shots. Now the third meeting modus sent, awaited. In this mode, the meter divides the viewfinder into two areas, the center on the background, and it takes most of the reading about free quarters from the central portion. It doesn't ignore the background, but it prioritizes the light falling on the subject, which makes it ideal for portrait photography, because the set up mirrors the classic composition for portraiture with a model in the center of the frame. So it's important to choose a meeting mode that matches your vision for the subject on. Once you've done that, the next question is, what is the light meter actually telling you, Thief