Darren Smith Photography's photographic tutorials are aimed to teach anyone interested in photography the basics in how to operate their camera and what to consider when you move beyond taking "snaps".
This video is all about the aperture of a camera lens and how it affects your photographs.
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Hello and welcome to the Darren Smith photography tutorials
This video is all about the aperture of the lens
The aperture is the little hole you can see through the glass of the lens and it controls the amount of light that passes through to the camera sensor. It is commonly controlled by adjusting a dial on the camera body, it can also be controlled automatically by the camera, or an old equipment by rotating the aperture ring on the lens itself
The smaller the f-number on your lens the wider the aperture is, this means a bigger hole to let more light through to your sensor, likewise the higher the f-number the more narrow the aperture is and this means a smaller hole to let let light pass through.
The f-number is calibrated to allow exactly half as much light through as the previous setting and twice as much light through as the next setting, for example a lens set at f/8 will allow twice as much light through as one set of f11 but only half as much as one set at F 5.6
The aperture not only controls the amount of light entering your camera, it dictates how long the shutter has to be open to achieve a correct exposure. Our wider aperture needs less time than a small aperture to take a photograph. It also controls the amount of the subject that is in focus otherwise known as depth of field.
The aperture can sometimes be seen through the viewfinder or on your screen if your camera has a depth of field preview button then, using it closes the aperture to that being used to take your picture when looking through the viewfinder and modern camera normally open the aperture to its widest setting this allows as much light as possible for you to compose your shot
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