What is ISO?
• ISO is the measurement of how sensitive a digital camera's sensor is to
• The higher the ISO, the more sensitive the image sensor and therefore
the possibility to take pictures in low-light situations..
Aperture is the opening through which light travels towards the sensor.
How To Use Aperture?
• A large aperture (low f number)
allows more light to hit the
sensor. That means that you
can use a faster shutter speed,
either to capture fast paced
action, or to take photos in low
light. In high light a small
aperture decreases light and
prevents over exposure.
changes the depth of field.
Depth of field is a distance
where the subject appears
sharp. Large aperture (low f
number) has small depth of
field. So if you want a tiny part
of your scene to be in focus,
use a large aperture.
• A camera's shutter speed can control exposure, but it's also one of
the most powerful creative tools in photography. It can convey
motion, freeze action, isolate subjects and smooth water etc…
• Create a series of photographs which illustrates the
use of ISO, aperture and shutter speed in digital
• A series of six photographs. Two contrasting photos
for each element. E.g. for ISO you would shoot one
image using a low ISO creating a fine grain image
and another with a high ISO creating a grainy image.
• Using Photoshop present your images side by side in
a single A4 or A3 image.