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Archive 2016 · Holy Dead Pixels, Batman??? help

  
 
spiffypix
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p.1 #1 · p.1 #1 · Holy Dead Pixels, Batman??? help


I haven't used my Canon 6D in a few months. I started taking photos yesterday and...WTF?! Are these all dead pixels? Why would this have failed to this degree? Can it be fixed or do i have to get my healing brush ready to go?

Screen cap here:

http://www.spiffypix.com/img/s9/v87/p1858565332-5.jpg



Feb 03, 2016 at 02:09 PM
Ian.Dobinson
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p.1 #2 · p.1 #2 · Holy Dead Pixels, Batman??? help


thats quite a few . but then with the many million available I bet there are quite a few you never see as well

you probably notice them because of the amount of black in the image .

if you run that RAW file thru Lightroom (or some other softwares ) then they should automatically be mapped out .



Feb 03, 2016 at 02:35 PM
spiffypix
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p.1 #3 · p.1 #3 · Holy Dead Pixels, Batman??? help


Hmm...This was opened in LR and imported into Helicon Focus. LR did not map them out - Is there a setting that I need to check in LR to ensure that it will map them out in the future? Thanks


Feb 03, 2016 at 02:43 PM
Ian.Dobinson
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p.1 #4 · p.1 #4 · Holy Dead Pixels, Batman??? help


did you see them when the image was in LR and not imported into Helicon ? i always thought LR did it by default . can't remember seeing a setting to turn it off .


Feb 03, 2016 at 02:48 PM
spiffypix
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p.1 #5 · p.1 #5 · Holy Dead Pixels, Batman??? help


Indeed they are present in LR, pre-Helicon. I'll do a google search to see if there is a setting. Thanks!



Feb 03, 2016 at 02:50 PM
tntcorp
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p.1 #6 · p.1 #6 · Holy Dead Pixels, Batman??? help


did you confirm these stuck pixel remained on after you had restarted your camera?


Feb 03, 2016 at 04:52 PM
spiffypix
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p.1 #7 · p.1 #7 · Holy Dead Pixels, Batman??? help


I did not, but I will


Feb 03, 2016 at 04:58 PM
Shutterbug2006
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p.1 #8 · p.1 #8 · Holy Dead Pixels, Batman??? help


Do a manual extended cleaning cycle with the body cap on - I believe that will map out the defective pixels successfully.


Feb 04, 2016 at 06:50 PM
spiffypix
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p.1 #9 · p.1 #9 · Holy Dead Pixels, Batman??? help


Ooh great to know. I will do that. Thank you.


Feb 04, 2016 at 06:51 PM
Roland W
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p.1 #10 · p.1 #10 · Holy Dead Pixels, Batman??? help


Doing a sensor cleaning cycle on a Canon body is the correct process to update the mapping out of hot pixels (aka stuck pixels) like you have shown us in that image. The mention of the process is only vaguely mentioned in Canon manuals for some of the latest cameras. Check out sensor cleaning in the manual for your camera to see if it is mentioned. I have heard various reports about if the length of the clean cycle makes a difference, and do not know the answer to that.

Remember that the number of hot pixels that show up in an image can depend some on the operating temperature of the camera, and also on the length of the exposure, with long exposures potentially worse. And finally, you often do not notice hot pixels in normal photography, but they really show up in large black areas, like your image that has a black background. Night star photography is also a place where lots of black gives them a chance to mix in with the stars.



Feb 05, 2016 at 01:13 PM
spiffypix
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p.1 #11 · p.1 #11 · Holy Dead Pixels, Batman??? help


That worked, Roland! Thanks to everyone for their assistance. Love this group.


Feb 07, 2016 at 06:42 PM
Shutterbug2006
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p.1 #12 · p.1 #12 · Holy Dead Pixels, Batman??? help


spiffypix wrote:
That worked, Roland! Thanks to everyone for their assistance. Love this group.


My name's not Roland!



Feb 08, 2016 at 07:06 PM
spiffypix
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p.1 #13 · p.1 #13 · Holy Dead Pixels, Batman??? help


Thanks to EVERYONE! Including Shutterbug2006


Feb 08, 2016 at 08:37 PM





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