Mitsubishi P91DW User Manual Page 22

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Alpha Innotech User’s Manual, version 4
1-17
1.6.5 Use Expose Preview to Set Exposure Time
Once the sample has been positioned and the camera has been focused, close the door to
the MultiImage light cabinet and make sure that the appropriate illumination source is
turned on. Also make sure the cabinet door indicator in the Cabinet Control software
interface indicates CLOSED.
Click on the green EXPOSE PREVIEW button and select the desired exposure time in
the menu options to give the desired image intensity quality. Individual adjustments for
1/30 seconds, seconds, minutes, and hours are available.
For most white-light applications, 1/30 second exposure is sufficient with
final adjustments of the aperture for best image quality.
For UV fluorescence applications, usually 1/30 to 4 seconds is sufficient and
the aperture should be adjusted fully open, F1.2 for the standard zoom lens.
The ‘show saturation’ option should be selected for these applications.
Note: When the system is switched to EXPOSE PREVIEW mode, the image may
flash or change brightness because the camera collects photons from the image for a
longer period of time before sending the image to the computer’s display readout.
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