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ISO
The ability to increase the sensitivity to light
ISO
Shutter
Speed
Aperture
ISO is a number value that represents the sensitivity to
light. The higher the number the more sensitive and the
brighter the exposure. Think of it like ‘free’ light for your
camera. This becomes important at night/or in low light.
Low ISO produces a clean
image. ISO can also be
represented by sound volume
where a normal level is clean.
When you raise ISO, you
gain light sensitivity. But like
turning up sound volume, you
potentially could raise distortion
in the process. Distortion in an
image appears as noise giving
a grainy look. This may look
fine on the LCD screen, but it is
better to review an image after
shooting and zooming in to
check the noise levels.
ISO 300
ISO 3000
Distortion
