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Aperture & Shutter Speed

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S. Ballew

on 13 September 2018

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Transcript of Aperture & Shutter Speed

Aperture, Shutter Speed

is the part of the camera that controls the VOLUME of light that hits the film/censor.
Aperture is denoted by f stop, a fraction that indicates the diameter of the aperture opening in relation to the focal length of your lens.

Each full stop denotes a doubling or halfing of light...
Aperture effects the depth of field in an image.
Depth of field is the area of the image that is acceptably sharp.
is like the gate that controls the amount of TIME the aperture light hits the camera's sensor/film.

Shutter Speed also
camera and/or subject movement.

To get the visual effect of a
large (long) depth of field,
like in this picture, the photographer uses a small lens opening (a large f stop number, i.e. f16. f22).

Everything in the frame of this picture is in focus.
To get the visual effect of a
shallow depth of field,
like in this picture, the photographer uses a large lens opening (a small f stop number, i.e. f2.8. f4).
A small area of this photo is exceptionally sharp.
The subjects of this picture are slightly blurred, hence the shutter speed is slower than average - below 1/60 of a second.
The movement of the horse has been sharply frozen in time. Hence, the use of a fast shutter speed, i.e. 1/500.
Aperture , Shutter Speed & ISO work hand-in-hand to create proper exposure.
It is much like the pupil of a human eye.
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