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Old 27-08-2012, 04:27 AM
gbeal
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gbeal is offline
 
Join Date: Oct 2004
Location: New Zealand
Posts: 4,306
Best guess is that "400" relates to 1/400th of a second. I don't think they should be totally black, but this may not be sufficient to give an image, try something like 1/10th or 1/60th and experiment.
What do you see on the camera LCD when you take the image?
Gary
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