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Old May 17, 2004, 2:13 PM   #1
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Hi all, i bought a second hand Sony U20 digicam

most of the shots were rather ok, but on several of em, i found white spots on it take a look at the attached picture



can ya help me find out wats wrong with it?? my cam

dirty lens or normal flash problem
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Old May 17, 2004, 3:25 PM   #2
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It's just dust that got caught in the flash. I've had it sometimes with flash shots. :-)
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Old May 18, 2004, 9:31 AM   #3
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The maximum useable flash range of your camera is 6 feet. Unless you really wanted a picture of the back of a couple of heads you would do better to turn the flash off for shots of anything over maybe 8 feet away.
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Old May 18, 2004, 12:45 PM   #4
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hmmmm, so the main problem is with the flash?

meaning the dust in the air reflecting the light from the flash? into the camera CCD?
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Old May 18, 2004, 9:03 PM   #5
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It is reflection of the flash off of dust in the air.

I hve a U20 and experience these ghost orbs from time to time.

The problem is more acute with any small camera such as the U20 since the flash is located too close to the lens' optical axis thus increasing the probability that reflection from an random dust partical will come right straight back into the lens. The close spacing of the flash to the lens will also produce more 'red-eye' shots for the same reason since the spherical shape of the eye makes sort of a retro-reflector that causes any light rays entering the pupil to be reflected back along the same path that the rays entered; the red part comes from the blood rich retina at rear of the eye.
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