When capturing picture in open-air at time of night.... my dmc f3 cam shows spots in picture spots if dust particles present in the air which spoil the look of picture :( plz help

What makes you think you have dust in your camera? It is a closed system, so is there is any debris in h=the camera it almost certain was in the camera from the start. It could be anything in the system broke off. Or is causing little particles coming of (from what?) Do you see spots on the screen, or even on the pictures? Or do you see mild in the lens? Please explain what it is you see precise.

The practical answer is that you can't open the camera and use compressed air. The real answer is..."sure....open it up and grab that can of compressed air. Just don't be surprised or upset when you put the camera back together and it no longer works. But the experience will be fun." If the foreign object doesn't actually appear on the pictures, don't worry about it. All lenses have stuff and dust inside. It will move around as time passes.

If these spots are in different places on each picture, then they are actually reflections of dust particles in the air from the flash being so close to the lens. If they are in the same place on each picture, then they are indeed water spots on the lens.

It's likely that the spot is a speck of dust that has found its way inside the camera and onto the sensor. Apparently when the lens barrel extends after the camera is turned on a small amount of suction is generated - enough to pull tiny specks of debris inside. Please refer to the following video:
https://www.youtube.com/watch?v=0nmwt0frZns

Are these flash pictures? Are the spots in different places on each picture? If the answer to both questions is yes, the spots are dust particles in the air reflecting the flash back into the lens.

If the spots appear on flash pics only and are in different places on each photo, then the spots are not on your lens. Those are dust particles reflecting the light from your flash. It's a common problem with point-and-shoot cameras.

The spots are dust particles in the air reflecting the flash back to the camera because the flash is so close to the lens. This is a problem with all point and shoot cameras...some more than others.

Hi,

on the surface of the CCD, that's a picture sensor chip, inside the zoomunit there will some contamination such as dust or an other particle
The ccd surface must be cleaned by an camera repair center

regards Rob NL

If the dark spot is not focused, it could be on the sensor. Otherwise, check the lens for any dust particles. If you can't find any dust, take the camera to an authorized service center.

it could be your geting pics of the dead you no like sols an stuff i us to get that an i asked my friend an thats what he sed