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Thread: dead pixels

  1. #1

    Default dead pixels

    how do u guys test for dead pixels? i heard can be done by using the lens cap and take a black pic and see how many are not black... i got some red, blue and dunno green or white pixels leh...

    also how can i count the percentage of dead pixels? i think above a certain percent, the company then can change the cam rite?

  2. #2
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    Default Re: dead pixels

    Originally posted by stl
    how do u guys test for dead pixels? i heard can be done by using the lens cap and take a black pic and see how many are not black... i got some red, blue and dunno green or white pixels leh...

    also how can i count the percentage of dead pixels? i think above a certain percent, the company then can change the cam rite?

    here's the link:
    http://forums.clubsnap.org/showthrea...ght=dead+pixel

  3. #3

    Default

    does Dead pixel applies to DSLR or Compact, or both ?

  4. #4
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    Default

    Originally posted by West_ray
    does Dead pixel applies to DSLR or Compact, or both ?
    i belive it's both!

  5. #5

    Default

    then how to prevet dead pixel from forming ??????

  6. #6
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    Default

    Originally posted by West_ray
    then how to prevet dead pixel from forming ??????
    Stop using your camera!

    Seriously, it is part of normal wear and tear.

  7. #7

    Default

    yeah - talk about wear and tear - I got 1 dead pixel on my 5700 within 3 hours of using it!!!!

    All fingers crossed - hope there is no more to come.

  8. #8
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    Default

    Originally posted by Nutcase
    yeah - talk about wear and tear - I got 1 dead pixel on my 5700 within 3 hours of using it!!!!

    All fingers crossed - hope there is no more to come.
    At least it is still under warranty. I got one dead pixel in my CP5000 within 3 months and had the CCD remapped by Nikon. My camera then developed a very hot pixel (ie will appear even in short exposures after continuous shooting) at 15 months. Nikon wanted to charge me S$100 to remapped the CCD out of warranty!!!

  9. #9

    Default

    how long will it take for them to fix dead pixel?

  10. #10

    Default

    Originally posted by linse
    At least it is still under warranty. I got one dead pixel in my CP5000 within 3 months and had the CCD remapped by Nikon. My camera then developed a very hot pixel (ie will appear even in short exposures after continuous shooting) at 15 months. Nikon wanted to charge me S$100 to remapped the CCD out of warranty!!!
    So they actually agree to fix 1 dead pixel under warranty?

    I had the impression that they will only fix it if > x number of dead pixels.

    This is good information!

  11. #11
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    Default

    Originally posted by Nutcase
    So they actually agree to fix 1 dead pixel under warranty?

    I had the impression that they will only fix it if > x number of dead pixels.

    This is good information!
    They don't actually replace the CCD. They just remap the CCD so that the defective pixel is not used in the reconstruction algorhythm.

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