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The Depth of Field is a measure of how
much `depth' of an image will be in focus.
An image with large depth of field will have much of the
image sharp and in focus.
An image with a shallow or small depth of field will
usually have only a small part of the image sharp and in
focus.
There are three things which can change the depth of
field:
1. The aperture
2. The focal length of the lens used
3. How near the subject focussed on is to the camera…read more

Slide 3

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Aperture & Depth of Field…read more

Slide 4

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Camera lens focussed on the barbed-wire Large aperture (f2)
Note how the background is out of focus.…read more

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1. Changing the Aperture
Camera lens focussed on the barbed-wire Small aperture (f16).
Note how whilst not completely in-focus, the background is sharper…read more

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Large aperture (f2.8) ­ Note how not all the seaweed is in focus…read more

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