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Now, let's try and take pictures.
We will start with macro shooting
Let's start with a small, mostly
stationary subject, such as a sea lemon, the size of a little finger.
Set the white balance to the ÒDaylightÓ or ÒCloudyÓ setting
dependent on the water depth. Since most sea lemon species are small,
use the macro mode. On camera models equipped with a manual focus,
bring the lens up to the minimum focal distance and focus manually.
Most digital cameras use an autofocus system called the contrast
detection method, which focuses on objects with the greatest pattern
definition. If you aim the camera at sea lemons living on rocks,
the camera is most likely to focus on the rocks in the background,
not the sea lemons. The manual focus is more effective in this case.
To shoot with the autofocus, first
advance to the minimum focal distance and press the shutter button
halfway until the autofocus lamp fires. In this state,
move the camera backward or forward to sharpen the focus as seen in the LCD
monitor. As you move the camera backward or forward, the focal point
will change. It is
easy to see the focal point in fine detail in the LCD monitor. When the right
focus is achieved, press the shutter button all the way to take the photo.
The method of moving the camera
backward or forward to set the focus is also
effective for cameras in manual focus mode.
Don't just take a single picture,
take several to be able to select the one with the best focus.
Next,
let's go after creatures even smaller than sea lemons, say fingertip-sized
shrimp or crabs. You need to get really close to the subject, but you can't
approach any closer than the camera's minimum focal distance or it won't
focus. In this case, you can work around the issue by employing the digital
zoom at a low rate of magnification. To do this, first zoom in to the maximum
telephoto
setting, set the focus according to the instructions in the previous section,
then zoom in further on the subject with the digital zoom and shoot.
Although shooting with the optical
zoom alone uses more of the pixel data captured by the CCD than the
digital zoom, which zooms only the data in the center portion
of an image, you can still capture a sufficiently clear picture if you use
the digital zoom at low levels and your camera has a large pixel count. So,
if you
wish to make a subject a little bit larger in a composition, you can try
using the digital zoom for this purpose.
We'll finish this section
with techniques for photographing fish as they swim. Let's use the
anemone fish as our training partner.
Since the anemone fish
has a habit of rarely stirring from its nest among the sea anemones, you will
be able to practice shooting if you are careful not to come so close that you
scare it.
Start by observing the anemone
fish's movements for a period of time.
If you do this and it is of the clown anemone fish species, which hides among
the sea anemones, you will observe that the fish has a path through the sea
anemones and a particular spot where it will stop for awhile. The
fish will move in a
specific pattern between the path and that spot. This pattern of behavior
is quite common in small fish and understanding it is the first step
to getting
good photographic results. Once you understand the anemone fishÕs
characteristic movements, you can decide where on its travels you wish to
photograph it.
To start off, you will want to
stay quite far away from the anemone fish and hold the camera with
your arms extended in front. Advance slowly with
the camera
extended to avoid startling the fish.
When you arrive at the spot from
which you would like to take the picture, aim the camera, press the
shutter button halfway and move it backward and
forward
until the camera is in focus and then wait for the anemone fish to come
along. When the fish arrives at the spot you wish to photograph, immediately
press
the shutter button all the way.
If
you try to press the shutter button on a digital camera all the way
the first time without first pressing it halfway, the shutter will
not
activate
until the
camera has had time to focus and meter the exposure and white balance.
The shutter lag may be as long as 1 second. Pressing it halfway reduces
this
time lag and
avoids situations where you press the shutter button only to have the
fish move on before the shutter releases, missing your opportunity
to capture
the image.
The reason for holding the camera
with your arms extended is to avoid startling the fish or causing
it to swim wildly around. If the fish
you are attempting
to photograph is always fleeing, it may be startled by your size
or the sound of the air you exhale. If you slow your movement, align
your
eye
line at
the fish's height and modify your breathing, the fish should become
more relaxed allowing you to take its picture.
Example of the focus set to the minimum focal distance in manual focus mode.
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You can shoot without startling fish by extending the camera at arms'length. |
Colorfully
patterned nudibranch move slowly and possess vivid colors, making
them ideal for practicing macro shots. If they
appear small even at the minimum
focal distance in macro mode, try using the digital zoom as well to make them
look larger. |
The trick to photographing shrimp and crabs is not very technical,
it is to understand their ecology and seek them out. If you find
one, photograph it before it flees.
Use the digital zoom for small subjects. |
To photograph an anemone fish, learn its habitual movements. Don't make
sudden movements or come too close. Pick a spot along its regular route and wait
for it to arrive. It's easier to photograph this fish without it fleeing
if you extend your arms out in front to shoot and keep your body as far away
from its nest as possible. |
This section has been extracted
from Canon Japan on how to prepare your digital investment. http://www.canon.com/copyright.html |