What is ISO? ISO is the measurement of how sensitive a digital
camera's sensor is to light. The higher the ISO, the more sensitive
the image sensor and therefore the possibility to take pictures in
low-light situations..
Aperture 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. Changing the aperture, 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.
Shutter Speed 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
Creative Shutter Speed
Your Task!! Create a series of photographs which illustrates
the use of ISO, aperture and shutter speed in digital photography.
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.