
1) What is Aperture?

2) Size of Aperture – Large vs Small
Aperture
In photography, aperture is expressed in
f-numbers (for example f/5.6). These f-numbers that are known as “f-stops” are
a way of describing the size of the aperture, or how open or closed the
aperture is. A smaller f-stop means a larger aperture, while a larger f-stop
means a smaller aperture. Most people find this awkward, since we are used to
having larger numbers represent larger values, but not in this case. For
example, f/1.4 is larger than f/2.0.
Take a look at this chart: The larger the
f-number, the smaller the aperture.
3) What
is Depth of Field?
The
size of the aperture has a direct impact on the depth of field, which is
the area of the image that appears sharp. A large f-number such as f/32, (which
means a smaller aperture) will bring all foreground and background objects in
focus, while a small f-number such as f/1.4 will isolate the foreground from
the background by making the foreground objects sharp and the background blurry.
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