Olympus DP73 Instructions Manual page 12

4. Under fluorescent ring illumination or other AC-driven illumination such as a phase control light intensity adjusting
illumination system, the following phenomena may be observed by illumination light flickering because of high light
intensity and shortened exposure time :
• Flickering of the displayed image.
• Instability in exposure.
• Hatching patterns in pixel shift recording (4800 x 3600 or 2400 x 1800 pixels, 3CCD mode).
However, provided that the brightness can be adjusted using the light intensity control knob or ND filters, the above
phenomena may be attenuated by adjusting the brightness so that the exposure time exceeds 1/50 sec.
For details on the microscope models using AC-driven illumination, contact Olympus.
5. Combinations of this product and non-Olympus microscopes have not been evaluated extensively. Non-Olympus
microscopes and commercially available C-mount lenses can be used provided that they match a CCD with a size
of no less than 1/1.8 inch and the lens projection length from the C-mount body attaching section is no more than
4.5 mm. However, problems due to optical adaptability, such as shading, may be observed.
6. When the specimen has a low contrast (near transparent) or high reflectance (mirror status) and the aperture iris
diaphragm is stopped down near the smallest aperture, spot flare may be noticeable.
7. When the edge of a non-transmitting object is observed under the STM6 (small measuring microscope) transmitted
illumination, flare may be noticeable due to the difference in brightness between the transmitted sections (over-expo-
sure) and non-transmitting sections (under-exposure). To reduce the flare, set a lower exposure using the exposure
correction function or setting the exposure manually.
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