Question about Kodak EasyShare DX7440 Digital Camera

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Dust Orbs I am having serious problems with "Dust Orbs" appearing in pictures. Mostly indoor pictures. These things are ruining my pictures. Are they caused by the Infrared Beam that the camera uses to focus? Or is something else wrong with my camera? Do ALL digital cameras have this problem with dust? Do DSLR have same problem? How come these dust orbs only appear with Digital Cameras, and not film? I need a digital camera that works indoors. Any help appreciated. Thanks in advance....

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Re: Dust Orbs

Many digital cameras have this problem, though it has nothing to do with the camera being digital. It is small specks of dust in the air being illuminated. You will never see this problem without a flash. The reason you see it on digital cameras are, unfortunately, due to the same aspects that make these cameras so popular -- their compact size, small lenses, and ample depth of field. With the small size, the lens is very close to the flash, and since illumination falls off with the square of distance, even a tiny speck will be lit up very bright when next to the flash. And since the lenses/sensors are quite small and have a lot of depth of field, you resolve this as a out of focus circle, not just as a veiling flare over the whole image. The solution I guess would be to shoot in less dusty air, or get the flash off the camera a bit. Or get a different camera.

Posted on Sep 13, 2005

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Re: Dust Orbs

Those resemble the kind of marks that might be caused by fine mist on the sensor resulting from cleaning with compressed air containing water or oil. But your Kodak is a non-interchangeable lens type and, presumably, fairly resistant to intrusion from atmospheric pollutants or direct hits with mist. However it's possible that condensation settled on the sensor, dried and left these marks. Of course, some folks believe that digital cameras can capture images of "spirit orbs". I tried to fool my nephew and niece with a concocted digital photo last night but they weren't persuaded.

Posted on Sep 13, 2005

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Re: Dust Orbs

The bright, round spots appear to be flare caused by internal reflections of the lights in the lens. Dust on the sensor blocks light, and hence appears dark.

Posted on Sep 13, 2005

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