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DPChallenge Forums >> Hardware and Software >> Are Hot Pixels covered by warranties?
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02/20/2007 11:30:12 PM · #1
I have found a hot pixel on my D200. I shot 185 images today and noticed a hot pixel on one of my images that I don't ever remember seeing before. On further investigation it is on every image in the same place. When I got home I broke out my warranty info, but it is kinda vague.

Have any other D200 peeps dealt with Nikon to fix hot pixels under warranty? Also, how do I contact Nikon if I want to talk to someone about it? I have no phone number on my warranty sheet, just a couple of addresses.

Thanks!
02/21/2007 12:15:16 AM · #2
Good luck, my guess is they will say a single hot pixel falls within the standard tolerance and will do nothing. Push them hard since a hot pixel makes it impossible to do a great pic without further processing.
02/21/2007 12:20:59 AM · #3
I think they'll "fix" it... but basically they just remap it.
02/21/2007 12:45:33 AM · #4
Hot Pixels and dead Pixels are two different things. Hot pixels typiclly appear during Long Exposures when a photosite "overcharges". A dead pixel will be a solid color in any image same place 100% of the time.
02/21/2007 11:09:42 AM · #5
Originally posted by RainMotorsports:

Hot Pixels and dead Pixels are two different things. Hot pixels typiclly appear during Long Exposures when a photosite "overcharges". A dead pixel will be a solid color in any image same place 100% of the time.


My problem is a hot pixel I think, but it is happening at normal exposure times at all ISO settings.

Message edited by author 2007-02-21 11:19:09.
02/21/2007 06:18:54 PM · #6
Originally posted by breadfan35:

Originally posted by RainMotorsports:

Hot Pixels and dead Pixels are two different things. Hot pixels typiclly appear during Long Exposures when a photosite "overcharges". A dead pixel will be a solid color in any image same place 100% of the time.


My problem is a hot pixel I think, but it is happening at normal exposure times at all ISO settings.


Hmm can u give us some shots? It shudl worsen with longer expoisure but lets say u have a spot where the dot is always red right at the same pixel even if u say shot a white wall in any light at 1/2000. I would consider that a dead pixel same as a dead pixel in a LCD screen.

But im no expert on CCD sensors. Eitherway it can still be remapped.
02/21/2007 07:36:37 PM · #7
Here are examples:


02/21/2007 07:39:04 PM · #8
Originally posted by breadfan35:

Here are examples:




Yep that would be really annoying!!
02/21/2007 07:39:45 PM · #9
That looks like a hotpixel, does it show up in any daytime exposures? As far as a night time exposure it looks like a hot pixel.
02/21/2007 07:47:49 PM · #10
It can be fixed... I don't think Nikon will leave ya hanging.

Message edited by author 2007-02-21 19:48:25.
02/21/2007 07:49:38 PM · #11
Originally posted by RainMotorsports:

That looks like a hotpixel, does it show up in any daytime exposures? As far as a night time exposure it looks like a hot pixel.


That photo that I took the examples from are in a board room. It's dark because it is in a woman's hair (brunette). As i said I took 185 photos, in all lighting conditions with normal exposures and at different ISOs None were long exposures.

I spoke with a guy where I bought the camera and he told me to send it back to Nikon which is what I will end up doing most likely, but I will have to wait until Monday or so.

Message edited by author 2007-02-21 19:50:14.
02/21/2007 07:54:29 PM · #12
As i said eitherway the fix is a remap. But if all the pictures in all lighting conditions had a pixel in the same place of the same color, thats a dead pixel. That photo looks like a Hot Pixel shot on a dark sky.

heres a link on hotpixels though - //www.imaging-resource.com/ARTS/HOT/HOT.HTM

According to kenrockewell and alot of other people - //www.kenrockwell.com/tech/hot-pixels/index.htm

This would be considered a hotpixel anyways. I guess camera people wouldnt know the difference. Eitherway the fix is the same and the result is very similar so yeah just call nikon.

ALSO

//www.ashtech.net/~syntax/blog/archives/69-Apple-Aperture-Hot-Pixel-Hell.html

This article different then the rest tells about how aperature handles hot pixels compared to lightroom.

BUT it also refers to it as a bad pixel..... hmmm i think photographers and camera techs use the term dead, stuck, bad, and hot all the same even though theres 3 variants.

Message edited by author 2007-02-21 19:56:21.
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