Aaarghhh - a dead pixel on a 5D MK II

[soundhound]

Well, it had to happen. I found a dead pixel on my new (3 days old) 5D MK II. It's worse as shutter speeds get below 1/15th second, and visible as a green dot in RAW images and a white dot when converted to JPEG or TIFF.


I _really_ don't want to go through the process of exchanging the camera if I can avoid it (and it doesn't help that the camera is in an almost constant state of backorder at B&H).


In searching these forums, I saw mention of a procedure called "dead pixel remapping", but there was no mention of how to do it. I looked in my manual and found no mention of this procedure.


Can anybody tell me how to do this dead pixel remap on a 5D MK II? Will this essentially cure the problem?


How do other people here feel about returning the camera verses the alternative?


Thanks in advance.

[Oren]

We've already seen it, it should be pretty easy to fix. Here is a related thread:


http://community.the-digital-picture.com/forums/p/1536/11068.aspx#11068





Here is what this guy (in the thread I gave you) did:





1. Remove the lens and replace the body cap
2. Put the camera in
manual cleaning mode with the body cap in place. You might be able to
do this with the lens on, but I have always removed it and I don't
argue with success.


3. Leave the camera in manual cleaning mode for maybe a minute or so.
4. Check to see if the hot pixel is gone.
5. If not, repeat the procedure once or twice more.





If that doesn't help, try to remove the lens, put the body cap on and try to take few pictures while it's on - try taking pictures with long exposures.





Let us know if one of the above helps and which one.

[soundhound]

Thanks! The sensor cleaning trick with the camera body cap installed seems to have worked I'll try some long exposures to see if the demon has indeed been slayed. I can't for the life of me imagine why Canon would leave out this procedure in the manual, since dead pixels are not uncommon apparently.


Oh well.....


Thanks again. []

[Steve Eisenberg]

Automatic Noise Reduction (should be in the Custommenuu)also helps with any lingering hot pixels in long exposures. The camera will take the picture, then the sensor will expose with the shutter closed, if it sees anything other than black, it will clean up the problem spots. So between the manual sensor clean mode, and automatic noise reduction, you should be all set.


Also worth noting is the latest version of DPP has a much more powerful noise reduction than previous versions. Just go to a newer Canon model support page to get it.

[Chuck Lee]

That's one out of how many? []

[soundhound]

Thanks all!

[kilofilms]

When you say manual cleaning mode, do mean select the feature Clean Now, or select the one that says Clean Now Manually?


Thanks,


Daniel

[Fast Glass]

That's one out of how many? [img]/emoticons/emotion-2.gif[/img]
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Out of 21 million pixels! Not a bad ratio I guess. But hopefully not in every camera.[]

[freelanceshots]

That's good that you brought this up. I noticed a dead pixel on my 5D2 at last job and forgot about it. I'm going to give the fix that is mentioned here a try.