Click
Here
for more articles |
|
|
Get
The Most Out Of Your Camera. (Part 1). |
by:
Tj
Tierney |
Would
you like to take wildlife pictures like
you see in magazines, or even turn everyday
objects into photographic art?
Did you ever see an image where only a small
part of it is sharp? Using the aperture
ring correctly can maximise the artistic
look of your image.
Not only does it determine the depth-of-field,
it also has the power to direct the human
eye.
The human eye is instinctively drawn towards
noticeable points of an image. These are
usually the sharpest and most important
parts of an image. Using a wide aperture
to limit the area of sharp focus can direct
attention to the most important elements
of your image and blur out any off-putting
backgrounds.
This isn't that hard to accomplish, and
can be blissful if done correctly.
Lets start off with understanding depth-of-field,
aperture and f/stops.
Depth-of -field: The distance from the front
to back that is in reasonable sharp focus
is called the depth-of-field. There are
two ways of controlling depth-of-field:
Use a small aperture or focus on a point
farther away from your camera.
Aperture and f/stops: The aperture is an
opening in the centre of the lens through
which light passes. The amount of light,
which passes through an aperture, is indicated
by f/stops. The lower the f/stop the more
light that passes through the aperture.
Opening up one full f/stop doubles the amount
of light entering the camera. F/4 admits
twice the light of f5.6.
By selecting a small or narrow aperture
(f/16 or up), all or most of the scene will
be reasonably sharp. This is ideal for landscape
photography. By using a small aperture you
increase the depth-of-field.
By selecting a large or wide aperture (f/5.6
or below) you decide which part of your
image is sharp. This is ideal for taking
pictures of wildlife, portraits, sport and
small objects. By using a large aperture
you decrease the depth-of-field
The smaller the f/number, the wider the
aperture.
There is about twice the depth-of-field
behind the point of focus as there is in
front of it, using any aperture.
Now you know how to isolate your subject,
so it's time to put it to use. Set your
camera to aperture-priority (AV) mode, and
then select a large aperture (f/2 - f/5.6).
By doing this the camera will select the
shutter speed automatically. If you are
shooting wildlife choose a low viewpoint
to maximise the image, try putting the camera
lens at eye-level with the subject.
While the above will help to isolate you
subject, it's only a start. Know your subject,
especially when shooting wildlife. Don't
be fooled into thinking all elements of
an image must be sharp to be considered
a good photo.
TJ Tierney. Irish landscape photographer.
http://www.goldprints.com
This article is free for republishing
|
| Some of the Author
images can be viewed at: http://www.goldprints.com |
|