Dust halos

dust spotsDon’t get spooked by white, ghost-looking round spots that can appear in photos when taking photos inside with a flash. They are not celestial orbs as some often wonder. They are caused by dust.

Dust particles floating in the air when taking flash photos with a digital camera may be captured in pictures. Often referred to as dust halos, the particles are randomly spaced throughout an image. There may be just a couple of spots, or the problem can be so bad that you hardly see the picture.

Compact cameras are particularly prone to dust halos because the flash is so close to the lens. The light from the flash catches the dust and bounces back into the lens.

Preventing dust spots

When dust is present, there is really not much that can be done to avoid the problem. If you use an external flash, the phenomenon can be minimized or prevented.

Sometimes zooming in a bit and using a wide aperture will help. But realize that the more you zoom in when using a built-in flash, the more red-eye can be expected when photographing people.

A similar phenomenon occurs taking outside flash photos when it rains or snows.

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2 Responses

  1. Gail Bjork says:

    It’s difficult to say without seeing a sample image. Perhaps there is dust on or inside the lens which only shows when using the flash. To continue this conversation, kindly post an inquiry in our forum.

  2. Bill Farr says:

    I carry a small point & shoot camera with me all the time when I don’t carry my DSLR.  I used to carry a Dimage XT 3+ MB and have shot many an image.  I recently purchased the new Nikon S60 camera and have these “dust halos” in almost every  flash shot.  I checked the flash tube to lens distance and found that it closer than any other small camera I have used. Is this the real problem here?  The distance between the  flash and lens on the Dimage is at least twice the that of the S60 as are the old film cameras I used to carry at times.