Question about Nikon D200 Body Only Digital Camera

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Spots and artifacts on uploaded image

This problem is particularly true when there is a solid expanse of color in one area. For a time several spots appeared in the same places with each shot when they appeared, but not there are more of them and the could be in various places on the image. Processing images has been a magnified hunt for spots to eliminate through Photoshop. What is going on and how can the problem be solved?

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  • drummer5 Aug 05, 2008

    Thanks Cuchulain,



    I thought that might be the case, but since it seems it is not in all my shots, I thought otherwise. I'll give your suggestion a try.



    Thanks again, and YOU have happy shooting,



    Robert

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There would seem to be dirt on you sensor. Nikon recommend that you get it serviced if this happens - but read on for another solution...

It's happened to me once before
Using a cannister of inert gas (like you'ld use to clean a keyboard or circuitboard) I removed the lens and locked the mirror in the up position, then a single dart for the aerosol was all that was needed.

That's what I did anyway - but I had only 1 spec - if your sensor is that dirty, perhaps it's time to get your camera serviced anyway.

Happy shooting
/Cuchulain

Posted on Aug 05, 2008

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What does the blue light in the corner of the screen mean


Sorry could not find the exact manual. however you can find it from this one as they ought to be similar
http://www.vivitar.com/files_products/1033/ViviCam_F124_Camera_Manual.pdf

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1 Answer

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Ocassionally images from digital cameras will have "defect" pixels. These pixels may appear in the final photograph as bright white, green or red spots that are out of place when compared to the rest of the image. Sometimes people call these spots "hot" or "dead" pixels. Usually these pixels, and other types of "digital noise" appear in the darker or underexposed parts of images; additionally, images taken at longer exposure times are much more likely to have this issue. Many Nikon cameras have a "noise reduction" or "NR" process that fixes these problem areas. When NR is activated and image exposure times drop below 1/4 of a second the NR automatically processes the images as they are saved. This Noise Reduction feature is sometimes called "Night Portrait" or "Night Landscape" Scene Modes. If these spots are seen on images photographed under normal conditions (bright light with exposure times shorter than 1/4 second) then the camera may need to be sent in to a Nikon Service Center for repair. Notice the green defect pixel near the center of this image.

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1 Answer

What are defect pixels?


Ocassionally images from digital cameras will have "defect" pixels. These pixels may appear in the final photograph as bright white, green or red spots that are out of place when compared to the rest of the image. Sometimes people call these spots "hot" or "dead" pixels. Notice the green defect pixel near the center of this image. Usually these pixels, and other types of "digital noise" appear in the darker or underexposed parts of images; additionally, images taken at longer exposure times are much more likely to have this issue. Many Nikon cameras have a "noise reduction" or "NR" process that fixes these problem areas. When NR is activated and image exposure times drop below 1/4 of a second the NR automatically processes the images as they are saved. This Noise Reduction feature is sometimes called "Night Portrait" or "Night Landscape" Scene Modes. If these spots are seen on images photographed under normal conditions (bright light with exposure times shorter than 1/4 second) then the camera may need to be sent in to a Nikon Service Center for repair.

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