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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 20 Jun 2007 (Wednesday) 11:09
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5D, Hot pixels and Canons Service

 
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Jun 20, 2007 11:09 |  #1

So I purchased a 5D about a month ago and everything has been fine. I recently (June 2) shot my first wedding and during my review and post processing I would notice that some of my pictures would momentarily show some red and/or green pixels then they would suddenly disappear. At first I thought I was imaginging spots, then thought I had dead pixels on my LCD. Neither was the case, I had what I found out was called Hot Pixels on my sensor!

I felt sick to my stomach.

Fortunately I can say that these hot pixels did not ruin any of pictures as lightroom automically fixed them BUT I did not want to have to think or worry about them everytime I went shooting, plus who wants to pay so much $$ for a camera that has this problem?

So I called Canon last Monday, explained the problem and they told me to ship it to their New Jersey location for replacement. I did so via fedex overnight, they received it Wednesday and sent me a confirmation email on Saturday that they are working on my "ticket". Last night around midnight I received an email saying that my camera is on its way and when I checked FEDEX this morning I see that it was already delivered to my home!

I wont be able to get it until much later tonight to know whether or not they repaired or replaced but talk about FAST hassle free service!

I'm curious if anyone else out there has dealt with hot pixels before?


Canon 5Dii+5D :35L 1.4: 70-200L 2.8 IS: 24-105L :Canon 100mm 2.8: 85mm 1.8: Canon 50mm 1.8
www.eYeWonderPhotograp​hy.com (external link)
MM# 413819

  
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PacAce
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Jun 20, 2007 11:15 |  #2

From what I understand, when you get something like that, what Canon does is remap the pixels so that the hot or dead pixels do not show up any more. There's not much they can do to fix other than remapping the pixel so that the bad pixels doesn't show up in your image. And I doubt they'll replace the actual sensor unless it was really bad.


...Leo

  
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JDubya
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Jun 28, 2007 06:50 as a reply to  @ PacAce's post |  #3

Is it normal to get hot pixels during long exposure shots?




  
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Jon
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Jun 28, 2007 11:40 |  #4

JDubya wrote in post #3452792 (external link)
Is it normal to get hot pixels during long exposure shots?

Yes, it is. The longer the exposure the more the sensor heats up and the more electrical noise occurs.


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Raphael ­ Emond
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Jun 28, 2007 11:55 |  #5

The hot pixels are the norm in digital world. My sensor has a few like 5-8.
But never shows on prints. Just don't pixel peep your photos. All canon do to your camera is tell the image processor to discard the data from the wrong pixels and interpolate the data from the surounding pixels. The same thing Lightroom do to your photos. The only problem I see is if you have 20+ odd placed ones. That would be a bummer...


Canon Rebel XT, BG-E3, Sigma 12-24 EX DG HSM, 28/2.8, 50/1.8, 24-105L IS USM, Sigma 70-200 2.8 EX DG HSM
420EX, Sigma 1.4X Converter, Moded Off-Shoe Cord 2, 2x1Gb + 1x2Gb, Pelican 1550 Case, Hoya IR72, Mono-Tripod.

  
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snapmando
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Jun 29, 2007 00:04 as a reply to  @ Raphael Emond's post |  #6

Well I found some with mine and Canon want's it sent in. So that's where it's going, before my Warranty is up.


Canon Rebel XT
Sigma APO DG EX 70-200 f2.8, Canon EF 28-105mm f3.5-4.5 USM, 18-55 Kit Lens
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JeremyLangford
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Jun 29, 2007 02:34 |  #7

How can you see if your camera has some? Just zoom in on the camera preview?




  
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Ultra
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Jul 01, 2007 21:32 |  #8

JeremyLangford wrote in post #3458355 (external link)
How can you see if your camera has some? Just zoom in on the camera preview?

Well most of mine were really obvious like so:

IMAGE NOT FOUND
IMAGE IS A REDIRECT OR MISSING!
HTTP response: 404 | MIME changed to 'text/html' | Byte size: ZERO


IMAGE NOT FOUND
IMAGE IS A REDIRECT OR MISSING!
HTTP response: 404 | MIME changed to 'text/html' | Byte size: ZERO

Canon 5Dii+5D :35L 1.4: 70-200L 2.8 IS: 24-105L :Canon 100mm 2.8: 85mm 1.8: Canon 50mm 1.8
www.eYeWonderPhotograp​hy.com (external link)
MM# 413819

  
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Dellboy
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Jul 01, 2007 21:59 |  #9

Maybe you should try this.

put the cap back on the camera body.
put the camera in sensor clean mode - leave for 30 secs.
turn camera off then back on again.

dead pixels should be mapped out, sounds odd but worked on my 20D and many 5Ds on this forum.




  
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e ­ r ­ y ­ k
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Jul 01, 2007 22:08 |  #10

Dellboy wrote in post #3471579 (external link)
Maybe you should try this.

put the cap back on the camera body.
put the camera in sensor clean mode - leave for 30 secs.
turn camera off then back on again.

dead pixels should be mapped out, sounds odd but worked on my 20D and many 5Ds on this forum.

:-D true story.


Canon EOS 5Dmk3 //

  
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steve_r
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Jul 01, 2007 23:50 |  #11

when i got my first 5D, it had lots of fun dead pixels.. after 4 months in the canon service shop they gave me a new one without any.. it was the first 5D they had ever serviced ( i hate being the test subject ) and the software wasn't communicating with the camera correctly .. well thats the story i was told.. they were still goo, i was given a 5D loan unit for most of that time plus a new 5D ..


GearList

  
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5D, Hot pixels and Canons Service
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