From the course: Learning Underwater Photography

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Aperture

Aperture - Photoshop Tutorial

From the course: Learning Underwater Photography

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Aperture

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- [Narrator] In this movie, we'll be discussing aperture. An aperture is an element of your lens, and as you can see there, it opens and closes like an iris. That is, an iris associated with your very eye. - [Narrator] So aperture's going to control the overall exposure, including both continuous light, and strobes. Because, as Deek mentioned, it's an element of the lens, and that's the opening that all light needs to pass through before it enters the camera. Now apertures also determine depth of field, but we'll discuss more of that in a later chapter. - [Deek] Now at this point, we need to take a moment in order to define a very important term, and that term is stop. Stops are a unit of measure for light in photography. So each full stop is either twice as much light, or half as much light as its immediate neighbor. And if this seems a little bit opaque right now, it's going to make more and more sense as we move along. - [Narrator] So now we're going to discuss the stop scale in…

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