Nikon Coolpix 990 Краткое руководство по эксплуатации
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Nikon Coolpix 990 Help
The camera settings shown below offer a starting point for taking pictures with the Nikon Coolpix 990 digital camera.
We encourage you to familiarize yourself with the settings and usage of this camera.
A
Recommended Settings for Extraoral Photographs
Turn the camera on by set-
1
ting it to the
setting
A
located on top of the camera,
as shown to the right.
We suggest using either a wall mounted lightbox with a built-in slave flash or a bare slave flash
4
to eliminate shadow on the profile images. If you are using a bare slave flash, we have found that
it works best when placed precisely behind the patient's head, facing toward a white background.
You may need to adjust the brightness on the background lighting that you use in order to generate
accurate soft tissue hues. Overhead fluorescent lighting may also affect the color of the images.
You can replace the fluorescent bulbs with Vita-Lite, or other natural lighting bulbs to produce
better color images.
right picture. We also have to invest time in setting up our offices for the right lighting for digital
images.
Tips for Taking Extraoral Images
When you are taking the lateral head image, make sure the patient's head is level, with no tilting or
canting. We suggest that you place a mirror in front of the patient with a vertical line and have them
align themselves to it. This will reduce the amount of head tilting, making it easier to align the pho-
tos to the x-ray tracings. You should take the photo with the lens roughly along the patient's
Frankfurt Horizontal plane to ensure the most accuracy.
B
Recommended Settings for Intraoral Photographs
For intraoral photographs, we recommend switching to the Manual mode on the camera. This allows you to take higher
quality pictures than in the auto mode, and allows for greater control over the exposure and depth of field of the images. The
manual settings only need to be set once, as the camera "memorizes" these settings.
To access the manual set-
1
tings, turn the camera on by
setting it to the
setting
M
located on top of the camera.
Adjusting ISO film speed:
3
The ISO settings define how quickly the camera
takes the picture. A higher ISO number means the
camera will take the picture quickly, so there's less
chance of blurry pictures. This is especially useful
for intraoral pictures.
To set the ISO settings, hold down the flash button
on the back of the camera and rotate the "Command
Dial" located at the top of the camera as shown:
The letters ISO should appear in the Control Panel.
You should stop rotating the dial when ISO 400
appears.
http://www.quickceph.com/docs/1028Nikon_990_help.pdf
Nikon has included a help manual on the "Reference Manuals CD-ROM".
Adjust image quality:
2
Click on the
the back of the camera until
the FINE option is displayed.
Professional photographers spend time setting up their studios for just the
General settings:
2
To take intraoral images, the camera must be switched to the Macro Close-up
mode. To activate this mode, press the
the Control Panel and the LCD monitor. The Anytime Flash mode should be
turned on as well.
Adjusting Aperture Priority:
4
For a better depth of field, you should adjust the Aperture settings. Setting the
camera on "Aperture Priority" allows you to adjust the camera so you can take
pictures where the foreground and the background are both sharp. This is crucial
for intraoral photographs.
To enable "Aperture Priority", hold down the "Mode" button and rotate the
"Command Dial" located on the top of the camera until the
Next, rotate the "Command Dial" all the way to the right until the you reach an F-
Stop of about 9.0, which appears in the control panel screen at the top of the cam-
era. You will need to use the Zoom buttons to fine tune the value.
The macro icon
Quick Ceph
Adjust flash settings:
3
button on
Click on the flash button
the camera until the flash displays only the
symbol. This enables the Anytime Flash mode.
will then appear yellow on the LCD monitor.
Page 1
®
Systems
on the back of
Your Control Panel
should look like this.
FINE mode with Anytime
Flash enabled.
We recommend
using rechargeable
Nickel Metal Hydride
(NiMH) batteries with
this camera, as they
hold their charge
longer than regular
AA batteries.
button until the
icon appears in
icon appears:
Doc ID# 1028Nikon_990_help - Revision 12-13-00
FINE
TIP