Olympus DP26 Manuel d'instructions - Page 10

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Olympus DP26 Manuel d'instructions
4. 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 2/3 inch and the lens projection length from the C-mount
body attaching section is no more than 6 mm. However, problems due to optical adaptability, such as
shading, may be observed.
5. When the specimen has a low contrast (near transparent) or high reflectance (mirror status) and the
aperture iris diaphragm is stopped near the smallest aperture, spot flare may be noticeable.
6. There are some cases that red flare appears in the image of specimen which has very big differences
in luminance, and the strong luminance portion is located in the image. This results from the peripheral
surface reflection of the CCD. This flare can be minimized by adjusting the exposure for strong
luminance portion to appropriate level, or by opening the AS.
7. When the edge of a non-transmitting object is observed by transmitted illumination under the STM6
in combination with the MM6-OB3X/5X/10X objective and the MM6C-VL/MM6-ETR, flare may be
noticeable due to the difference in brightness between the transmitted sections (over-exposure) and
non-transmitting section (underexposure).
To reduce the flare, set a lower exposure using the exposure adjustment function or setting the exposure
manually.
8. The image of dark specimens under reflected light or in the darkfield (specimens that need exposure of
1/2 sec. or more at ISO 100 equivalent) cannot be recorded.
9. Specimens with a distribution that is not suitable for center averaged metering require spot metering or
exposure adjustment.
10. When electronic zoom is used for magnification display during focusing, the image may become
noticeably coarse with certain samples.
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