From the course: Introduction to Photography
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Understanding the internal light meter
From the course: Introduction to Photography
Understanding the internal light meter
- Before you take a picture your camera needs to be told what shutter speed to use, what aperture setting to use and what ISO setting to use. Now depending on how you have your camera set up you might have to specify all those parameters or you might only have to specify one or two. Or you might not have to specify any at all if the camera is in full auto mode. However, whether it's you or the camera making these choices there's still the question of what the parameters should be set to. Answering that question is what a light meter is for. A light meter is a sensor that lives inside your camera. It can look at the light that's coming through the lens, measure it and then calculate shutter speed, aperture and ISO settings that will give you a good overall exposure. You know people often refer to sliced bread as being the measure for the greatest thing and I think they only say that because they never tried to calculate exposure settings without a light meter. Doing that is much harder…
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