2. f/4.5
As shown above
this picture with the
lowest ISO lets
more light into,
therefore the
image is not as
clear.
f/29
This image
has come out
quite dark,
although it is
still quite
focussed.
f/8
This image is in
the middle with
ISO, it lets in just
enough light
through, the
aperture is middle
of the scale.
3. Shutter speed or
exposure time is the
length of time that a
shutter on a camera is
open for when taking a
photograph.
The amount of light that
reaches the film or image
sensor is proportional to
the exposure time.
4. ISO is the International
Standardization
Organisation. It is also the
measurement of how
sensitive a digital cameras
sensor is to light. The
speed of light is related to
the ISO numbers. The
lower the number, the
slower the response to
light.
5. Depth of field is the range of
distance that appears sharp. It
will vary depending on the
camera type, focusing distance,
aperture and perception.The
depth of field won’t dramatically
change from sharp to un-sharp
but will do so gradually.
Everything beyond focussing
distance will lose sharpness and
look almost blurred.
The image to the right is a good
example of depth of field.The
camera lens cover is in focus and
very clear.You can see the writing
on the front perfectly. However
the further back the picture goes,
the less focus the camera has and
leaves the background looking
blurred.
