aperture · iso, aperture and shutter speed. this is the exposure triangle. the aperture is a hole...
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Aperture
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what is ‘EXPOSURE’ ?
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'Exposure is the amount oflight you introduce to film or
an image sensor.' This then determines what is
actually recorded, to createa photographic image
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There are three
adjustable elements
that control the
exposure…
ISO, Aperture and
Shutter Speed.
This is the
Exposure triangle
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The Aperture is a
hole over the
lens that lets in
light.
A camera's
aperture setting,
controls the area
which allows
light to pass
through
your camera lens.
Your pupil does
the same thing.Dark conditions,
pupils gets larger tolet in more light
Light conditions,
pupils gets
smaller to let in
less light
Aperture
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You need to have your camera in 'Aperture priority' mode.
You control the aperture, the camera will automatically adjusts the shutter.
Practise changing the aperture - what is the aperture range on your camera?
Or any other make
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Aperture is
measured in
‘F-stops’.
F stands for
‘Focal Length’
These are seen
as a series of
numbers with an
‘f’ in front
e.g f2.8, f5.6,
f22
When you change from one aperture to the next it is
called moving down/up a 'stop'
Aperture
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Is there anything you notice?
Aperture
More light Less light
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More light Less light
small number = large aperturebig number = small aperture
Aperture
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Aperture & Depth of field(DOF)
Depth of Field (DOF)is the
distance between the
nearest and the furthest
objects that appears
'sharp' or 'in focus'
The DOF is controlled by
the aperture.
It also is dependant on
what you are focusing on.
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Everything in focus
WIDE DOF (large number)
Shallow, Small, Narrow DOF
Deep, Large, Wide DOF
Depth of Field
(DOF)is the distance
between the nearest
and the furthest
objects that appears
'sharp' or 'in focus'
Aperture & Depth of field(DOF)Focal point is sharp, background is
blurred
SHALLOW DOF (small number)
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Aperture & Depth of field(DOF)Depth of Field
(DOF)is the distance
between the nearest
and the furthest
objects that appears
'sharp' or 'in focus'
Focal point is sharp, background is
blurred
SHALLOW DOF (small number)
Everything in focus
WIDE DOF (large number)
Shallow, Small, Narrow DOF
Deep, Large, Wide DOF
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Aperture & Depth of field(DOF)
Subject in focus(flowers)
Blurred backgroundEverything in focus
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Aperture & Depth of field(DOF)
What do you think the aperture settings are?
Are these wide, medium or narrow DOF?
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Create a series of photographs that show narrow and wide depth of field.
You are aiming for one thing in focus with a blurry background and
everything in focus. Objects in a line, people, faces, flowers.
Add notes about the exposure triangle
Make a note of the aperture range on your camera.
An independent creative approach that shows application of camera settings and composition.
Added detailed notes to explain why you might change the aperture settings when taking different
photos.
watch a youtube clip about DOF.
Practise using different aperture settings
Upload your photoshoot to folder 'DOF photo shoot'
PPT is easier for presenting final images
Images should be jpeg or png format
Add to onenote
HINT:Try adjusting your
distance to the subject
when you stop up and down
Have a go at canonscamera simulator