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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 05 Feb 2014 (Wednesday) 14:51
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OMG !!! this actually works to get rid of dead pixels. I am in shock !!

 
Nick_Reading.UK
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Feb 05, 2014 14:51 |  #1

I noticed a dead pixel on my 5d mk3 so googled it and found this and it Bl00dy works..

http://www.bluehoursit​e.com …-pixels-canon-dslr-camera (external link)
Normal mirror down or Auto cleaning does not work BTW
I am well happy !! I thought my lovely 5D was off for repair for a moment.. :-)


EOS 5Dmk3 X2, 60D, EF24-70mm f2.8L mk2, EF70-200mm f2.8L IS mk2, EF85mm f1.8, EF50mm f1.4, EF50mm f1.8 mk1(350D with 18-55mm Sh"kit" lens).
Speedlite 600EX-RT, 430EX II Flash. manfrotto 190XDB tripod, Giottos GTMML 3290B Monopod, B+W 77mm 110 Single Coated filter, Hama 77mm Variable Neutral Density Filter.

  
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Numenorean
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Feb 05, 2014 14:54 |  #2

That doesn't fix any dead pixels - it just maps them out so you don't see them.


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Nick_Reading.UK
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Feb 05, 2014 14:57 |  #3

Well its not on the Photos anymore so that works for me :-)


EOS 5Dmk3 X2, 60D, EF24-70mm f2.8L mk2, EF70-200mm f2.8L IS mk2, EF85mm f1.8, EF50mm f1.4, EF50mm f1.8 mk1(350D with 18-55mm Sh"kit" lens).
Speedlite 600EX-RT, 430EX II Flash. manfrotto 190XDB tripod, Giottos GTMML 3290B Monopod, B+W 77mm 110 Single Coated filter, Hama 77mm Variable Neutral Density Filter.

  
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EOS5DC
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Feb 05, 2014 16:29 |  #4
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The camera just fills them in with a blend of the surrounding pixels. Very effective, though.


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maverick75
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Feb 05, 2014 16:32 |  #5

For what its worth I've never seen any dead pixels even when messing around with jpegs, so I'm pretty sure lightroom/photoshop fixes them as well and not just on raw files.


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Nick_Reading.UK
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Feb 05, 2014 16:34 |  #6

EOS5DC wrote in post #16666306 (external link)
The camera just fills them in with a blend of the surrounding pixels. Very effective, though.

So the camera does this on every shot (RAW and JPEG) while processing to card??


EOS 5Dmk3 X2, 60D, EF24-70mm f2.8L mk2, EF70-200mm f2.8L IS mk2, EF85mm f1.8, EF50mm f1.4, EF50mm f1.8 mk1(350D with 18-55mm Sh"kit" lens).
Speedlite 600EX-RT, 430EX II Flash. manfrotto 190XDB tripod, Giottos GTMML 3290B Monopod, B+W 77mm 110 Single Coated filter, Hama 77mm Variable Neutral Density Filter.

  
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Numenorean
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Feb 05, 2014 16:50 |  #7

Nick_Reading.UK wrote in post #16666316 (external link)
So the camera does this on every shot (RAW and JPEG) while processing to card??

With RAW, I believe the RAW processor does it. With JPG it will process it. It basically maps out the location of where each dead pixel is based on the signal it gets from them and keeps those pixel locations in memory and applies the removal as part of the conversion to JPG process.


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Keyan
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Feb 05, 2014 16:54 |  #8

Yep this is pretty well known on here ;-)a. I have done it before and it worked perfectly. Generally the recommendation is to turn it on manual clean with the body cap on, but with a capped lens it might work too.

It seems to map it at the RAW level off of the sensor and dead pixels won't show up in RAW or jpegs.


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Scatterbrained
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Feb 05, 2014 17:01 |  #9

Lr does that automatically. ;) Without it my images would look really bad.


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jvz09
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Feb 05, 2014 17:24 |  #10

can you get the pixels back? Like as you did this erroneously? Or to get back lost resolution after this has been done 10x times?


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Numenorean
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Feb 05, 2014 17:40 |  #11

jvz09 wrote in post #16666433 (external link)
can you get the pixels back? Like as you did this erroneously? Or to get back lost resolution after this has been done 10x times?

No...and you aren't losing resolution either. The same number of pixels are there - the ones with invalid data are "fixed" by averaging the value from surrounding, working pixels. You won't be able to tell. Either you would have say a black dot with nothing or a red dot with a stuck pixel being changed to be a shade of red or brown, etc. depending on the photo.


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davidc502
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Feb 05, 2014 17:45 |  #12

I couldn't imagine the sensor on my 5D2 not having any dead pixels, yet I haven't seen any. I guess it's going to depend on what's being shot to show up? I better not look too close or else I might find them, and them my OCD would kick in.. lol


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soccersnaps
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Feb 05, 2014 17:59 |  #13

yes ... just mapping out, just like dust spots


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hollis_f
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Feb 06, 2014 04:27 |  #14

Tried it with my 20D, 40D and 50D. It did nothing.

Edit: Obviously the 20D claim is a false memory.


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Nick_Reading.UK
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Feb 06, 2014 08:37 |  #15

hollis_f wrote in post #16667464 (external link)
Tried it with my 20D, 40D and 50D. It did nothing.

did you try Manual cleaning and take the lens off and use the protector cap thingy??


EOS 5Dmk3 X2, 60D, EF24-70mm f2.8L mk2, EF70-200mm f2.8L IS mk2, EF85mm f1.8, EF50mm f1.4, EF50mm f1.8 mk1(350D with 18-55mm Sh"kit" lens).
Speedlite 600EX-RT, 430EX II Flash. manfrotto 190XDB tripod, Giottos GTMML 3290B Monopod, B+W 77mm 110 Single Coated filter, Hama 77mm Variable Neutral Density Filter.

  
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OMG !!! this actually works to get rid of dead pixels. I am in shock !!
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