View Of Images - Nikon DS-Ri2 Instructions Manual

View of Images

6.5
6.5
Symptom
The image blurs.
The image is too dark or too
bright.
The contrast is low.
Chapter 6
Possible cause
The optical device is out of focus.
The aperture diaphragm is stopped
down too far when using the
microscope.
The magnification setting for the optical
device is too high.
The electronic zoom is being used for
observation.
The exposure time is too long.
The product is used in a place subject
to frequent vibration.
Illumination for the subject is improper.
The exposure is not adequate.
Monitor is not properly adjusted.
The illumination is too bright or too
dark.
Light around the subject affects
contrast.
Field diaphragm and aperture
diaphragm of the optical device
(microscope) are set improperly.
Filter selection for the optical device
(microscope) is improper.
The contrast of the subject itself is low.
The image adjustment is improper.
Monitor is not properly adjusted.
Troubleshooting
Bring the optical device into focus by operating the
focus drive or focusing ring.
Adjust the aperture diaphragm to 70 to 80 percent of
the numerical aperture of the objective, or 70 to 80
percent of the pupil of the objective.
Lower the magnification setting for the optical device.
Note: As a guide, use 500 to 1000 times the
numerical aperture of the objective for the
magnifying power.
Turn off the electronic zooming function.
Note: Use of the electronic zoom may cause an
image to blur depending on the magnification.
Set a higher value for the camera gain and a lower
value for the exposure time.
Note: If setting the exposure time long for a subject in
motion, the subject is blurred.
Use the system in a stable, vibration-free place.
Adjust brightness of the illumination properly.
In AE mode, perform exposure compensation. Or, set
the photometry area and photometry mode properly.
Note: Refer to the instruction manual of the
NIS-Elements.
Adjust the display quality of the monitor properly.
Note: Refer to the instruction manual of the monitor.
Adjust brightness of the illumination properly.
Adjust the exposure.
Darken the interior, or put the cap on the binocular
tube for a microscope.
Adjust the field diaphragm to near the size
circumscribing the field. Adjust the aperture
diaphragm to 70 to 80 percent of the numerical
aperture of the objective.
For a phase contrast microscope or interference
microscope (dual beam or multiple), insert the
specified filter.
Note: For negative-positive images, generally,
inserting a green interference filter (GIF)
improves contrast.
Note: Insert a complementary color filter of the color
of the specimen for stronger contrast.
Consider illumination and/or microscopy method to
compensate for the low contrast.
Set the saturation, hue, contrast, black level, etc. to
an appropriate level.
Note: Refer to the instruction manual of the
NIS-Elements.
Adjust the display quality of the monitor properly.
Note: Refer to the instruction manual of the monitor.
16
Action