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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 20 May 2009 (Wednesday) 07:29
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Hot pixel...

 
ArtierSquare
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May 20, 2009 07:29 |  #1

Hi all,

I need your advice on a matter.
Until recently, I owned a 1DS and have been using it mainly for studio work . Almost all the work was Jpg though some was RAW. I never really had the need to use it above 200iso and as far as I could tell, apart from a sensor clean, not much else was needed.
I recently sold it to a guy in Estonia.
The guy there tested it and at 5ooiso found 1 hot pixel in RAW (not jpg). He's since had it cleaned and the pixel cannot be righted. He's been quoted over £4000 for a new CCD.
Q. Does it devalue the camera? If so by how much? Morally I feel obliged to offer something back, but how do I gauge a thing like this. He says he will loose money on any subsequent resale.
Your opinions please?

Thanks


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Woolburr
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May 20, 2009 07:55 |  #2

It doesn't devalue the camera at all....if he uses a photo editor such as Lightroom it will map the hot pixel out. You can also suggest that the new owner try a very common trick that often clears up a hot pixel issue. Simply put the camera into sensor cleaning mode with the lens still attached. Hit the shutter button and allow the camera to sit for 30 seconds to a minute. Power off the camera and restart it. This will often map out the hot pixel and the issue will be solved. I guess the real bottom line is that virtually all cameras have a hot pixel or two....especially as the ISO setting goes higher and higher. I really don't see where you owe the buyer anything.


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ArtierSquare
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May 20, 2009 08:03 as a reply to  @ Woolburr's post |  #3

Amazing thanks...

I've cut and pasted your whole message into a reply to him and await the outcome...

Thanks... really


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ArtierSquare
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May 20, 2009 11:40 |  #4

Ok, here is the reply...

"I tried that, it didn't work. Some cases it's possible to repair hot pixel with software, they tried at the service but it didn't work too :(

Any other suggestions?

Please?


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Jon
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May 20, 2009 11:48 |  #5

1 hot pixel out of 11 million? Canon wouldn't have replaced it for that when it was new. And how long was his ISO 500 exposure that turned this up?


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ArtierSquare
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May 20, 2009 12:03 as a reply to  @ Jon's post |  #6

This was the photo he sent me...

I can't even see it on any of my old pictures!

http://www.box.ee/holl​ywood/hot.jpg (external link)


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number ­ six
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May 20, 2009 17:28 as a reply to  @ ArtierSquare's post |  #7

All Digital cameras have dead and hot pixels. It's normal and unavoidable.

Run deadpixeltest.exe on a black shot from your camera and you'll find them.

I gather Canon repair can map them out, but I've never bothered.

Here's a screenshot of the deadpixeltest.exe report on my 30D - 47 dead, 231 hot pixels:


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sf_loft
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May 21, 2009 03:05 |  #8

The self-fix using the manual cleaning mode in the camera worked for my 5DMKII. The camera was able to map it out. The only problem is that in video mode it still shows on the same map. Don't think it's possible to map it out in video and hopefully Canon will fix it under warranty.

Here was my thread: https://photography-on-the.net/forum/showthre​ad.php?t=696092


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ArtierSquare
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May 21, 2009 05:49 |  #9

sf_loft wrote in post #7961733 (external link)
The self-fix using the manual cleaning mode in the camera worked for my 5DMKII. The camera was able to map it out. The only problem is that in video mode it still shows on the same map. Don't think it's possible to map it out in video and hopefully Canon will fix it under warranty.

Here was my thread: https://photography-on-the.net/forum/showthre​ad.php?t=696092

Oh great... I bought a 5Dmk 2 body in January and onother a week ago! I'm not going to start looking for duff pixels! What the naked eye can't see my unbroken heart won't grieve over!;)


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