Hot pixels question! (semi-urgent)

Discussion in 'Photography Equipment & Products' started by Val, Jan 18, 2008.

  1. Val

    Val TPF Noob!

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    I'll be brief. Bought D80. Discovered it had 2 hot pixels showing up at higher ISOs. Near centre and close together. Annoying.

    In a month sold D80, bough D300. Forgot to test for hot pixels (dump arse!:grumpy:). Discovered it had two hot pixels also at higher ISOs. Not so close and nearer to borders, not so annoying but still.

    Should i go to the shop now and change the camera? Or is it something that Nikonians just have to live with? If i change for a clean camera, will i get hot pixels again in a month?

    Sorry, im relatively new to DSLRs, but i have never ever had hot pixels on my cheap and nasty PoS cameras. I dont see how it can be a problem for serious semi-pro 2k SLRs :grumpy:
     
  2. jstuedle

    jstuedle No longer a newbie, moving up!

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    Why are two H.P.'s such a problem? Do they show up at all shutter speeds or just long shutter settings?
     
  3. jstuedle

    jstuedle No longer a newbie, moving up!

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    And by higher ISO, how high?
     
  4. Val

    Val TPF Noob!

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    They show up at shutter speeds SHORTER then 1/5 and ISO higher then about 300-400.

    They are not a big problem per se, but an inconvenience. They are visible on many low-light shots and sometimes even distracting.
     
  5. jstuedle

    jstuedle No longer a newbie, moving up!

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    Yea, I thought you were talking 30 sec at ISO 1600 or something. I wouldn't think you should see anything at that short a speed or low an ISO. Ours doesn't show any until the ISO gets real high and longer exposures.
     
  6. Val

    Val TPF Noob!

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    Here is an example:

    [​IMG]

    Here is 100% crop:
    [​IMG]

    Here is 100% crop when PREVIEWED ON THE SCREEN:
    [​IMG]

    This particular shot was made 1/6 at 1600, but they both reliaby show up above 400, somwtimes as low as ~250 :(
     
  7. Val

    Val TPF Noob!

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    So you would recommend to definitely change the camera?
     
  8. jstuedle

    jstuedle No longer a newbie, moving up!

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    What do you have active "D" set to?
    The noise looks like you have a custom setting really amplifying the image. To have so many cameras with the same issue/s, the laws of probability are against it. I would recommend setting all settings to default and retest.
     
  9. astrostu

    astrostu Guest

    In my experience, there will always be hot pixels - if not now, then soon as a sensor ages. I've seen $50,000 CCDs with hot pixels. For computer monitors, I think generally 7 or less hot pixels are considered "okay" as in they will not take it back under warrantee. You'll need to check this with the camera manufacturer or store if you're thinking of taking it back.
     
  10. Sideburns

    Sideburns TPF Noob!

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    it really depends on the manufacturer. My Dell monitor had one...I sent it back.

    Same with cameras...talk to Nikon about it.

    But uh....I barely noticed it?
     
  11. johnmh

    johnmh TPF Noob!

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    Nikon CAN map these out so they won't show if you send it in - or so I've been told. Might want to call up and ask about it.
     
  12. sabbath999

    sabbath999 No longer a newbie, moving up!

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    I sent one (a D80) in and had it mapped out.
     

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