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Exposure
Aperture / FStop
Shutter Speed
ISO
Composition
Rule of Thirds
Camera Icons
The amount of light allowed to fall
on to the image sensor in a digital
camera, which is determined by the
length of time the shutter is open and
how wide the lens is allowed to open
(aperture).
It is the combination of the intensity
and duration of light
The three fundamental elements
of exposure are aperture, shutter
speed and ISO
The Exposure Triangle
The aperture is the hole at the center of
your camera’s shutter.
The size of the lens opening is often stated
in the form of f/2, f/5, f/11, etc.
Smaller f number
Wider aperture opening
More light
Blurred background
Higher f number
More of your photo in focus.
Less light
Sharper background.
The amount of time your camera’s shutter
is open allowing light to hit your camera’s
light sensor.
Your shutter speed will have an effect on
the sharpness of your subject.
Lower shutter speeds let in more light, but
make your image susceptible to blur and
requires a steady hand or tripod.
Faster shutter speeds let in less light, but
can give you a sharper subject
ISO controls how the sensor responds to
the light it receives from the shutter and
aperture.
High ISO = more sensitive to light
Low ISO = less sensitive to light
Generally speaking, you’ll want to keep
ISO as low as possible as increasing the
ISO also increases noise.
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