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SOB I think I fixed it!!
I did a search and found a thread that discussed this in the 400D:
www.dpchallenge.com/forum.php?action=read&FORUM_THREA...
Here's the part that I tried:
1) Put lens or camera cap on, go to a dark room to be sure if you want
2) Take JPG+RAW shot, maybe at different ISO and shutter speeds, one could be 30 sec/ISO 1600
3) Press menu, go to Settings 2 tab, and press sensor Cleaning: Manual, then OK. Wait for 30 seconds or more (is this necessary?) The mirror inside opens, but since you are not removing dust, this has really no effect, but it seems that after doing this, the camera remaps the dead pixels.
4) Take another JPG+RAW shot, compare with shots from 2) - same shutter and ISO
Lo and behold it seemed to work. I took a series of shots and I can't find that spot again. So either it was something on the sensor (despite repeated automatic cleanings) or it really did remap the sensor.
Opinions anyone?
Posted 54 months ago.
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That could be a hot pixel.
this is due to the fact that every pixel sensitivity might not be the same (actually it will always be different, this is due to what's called "Process variation" in Semiconductor fabrication, it's a whole probabilistic issue) so, out of the 10 megapixels, there are always a few that is more sensitive. and when you expose for a long time, they sometimes got "stuck" at a high state. usually happen when you do long exposure.
and what u posted there is indeed an interesting method to ask the camera to remap those. i should try that too on my GF's 350D, her camera got quite a bit of hot pixels!
Also i found that Photoshop CS, when reading in raw file, it seems to be doing a rather good job remove those if there aren't too many.
Cheers!
EDIT: just tried, didn't work for me :(
Originally posted 54 months ago.
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kirk lau edited this topic 54 months ago.
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I have exactly the same thing! No idea what it could be. it's more visible at higher ISO's.
Posted 54 months ago.
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Europa....Thank You! No more hot pixel for me (at least for now).
Posted 54 months ago.
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Glad I could help out rafalweb - believe me I know your pain, and your fear that it might come back.
Best thing we can hope for is that we really have performed a crude sensor re-map and keep out fingers crossed :)
Posted 54 months ago.
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europa70, you really made my day; I just got my digital rebel for xmas and all the shots I've taken in the past three days had a strange pixel that looked exactly like the one in your example picture... I was totally heartbroken.... until I found this thread! The steps you outlined worked perfectly for me, no more dead/hot/annoying-whatever-you-call-it pixel. thankyouthankyouthankyouthankyou!!!!
Posted 54 months ago.
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I've had the same phenomenon since I bought my 400D (noticed just recently when doing some night shooting) and was starting to get very frustrated ;)
The routine you described above solved my problem 100% ! Thanks a million!
Posted 54 months ago.
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I'm so glad this helped you guys out. Only if you've had this happen to you can you understand the frustration so finding a solution was great.
Glad I could help.
Posted 54 months ago.
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I also had a dead pixel as opposed to a hot pixel. I had to send it it to have it fixed. I'll try the instructions on the g9 to see if that will help. Otherwise I will now have to send that in. While I can usually fix it in photoshop, sometimes it is just in the wrong place. Thanks for the guidance.
Posted 54 months ago.
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Just thought I'd chime in and say that i had the same problem with the white pixel and this technique worked for me (so far). Funny thing is, the problem only showed up in Canon DPP, and NOT Photoshop, PS Lightroom or Breezebrowser. *Shrug* Either way, it's not there now thanks to this 'undocumented method'. Hope it stays away.
Cheers!
Posted 53 months ago.
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Hi. I got the same hot pixel, but with the Canon G9.
Do someone have any suggestion what to do?
Thanks, Alexander.
Posted 52 months ago.
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I discovered a hot pixel on my D400 today after shooting a few high ISO long exposure shots. Thank you so much for the guide, it took care of the issue!
Posted 49 months ago.
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No problem. Every now and then this thread pops up and I'm always glad when it helps someone else out. It's a sick feeling to find a dead pixel :)
Posted 49 months ago.
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Yes it is, especially when you are new to photography and the DSLR world. This is my first real camera, and it was gut wrenching when I saw that lone purple pixel floating in all of my images. Thanks again!
Posted 49 months ago.
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I took some pictures at a wedding yesterday with my XTI and noticed a red dot on one of my pictures. Lo and behold, the red dot has been on all of my pictures since the first day I got the camera! I was pleasantly surprised that this the suggestion on this post worked perfectly! I used bing's search on the following phrase:
canon xti "red dot in pictures"
This was the only result from the search, but I'm glad it worked. Much thanks!
Posted 36 months ago.
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About 2 monthes ago, I started noticing some annoying red pixels that appeared in a lot of night time exposures I took. There were about 5 areas around each dark photo that had the red pixels, but there was only really one that was really big and obvious. After doing the remapping process above, that big red spot dissapeared but some other red speckles remain around the photo. Oh well, I'm happy that big annoying red blotch is gone!
View this one large and look at the area where the note is, that's that big red spot that finally went away!
Posted 35 months ago.
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I have a couple that show up in night shots. I don't care. The spot healing tool in photoshop fixes them in two shakes of a mouse tail...
Posted 35 months ago.
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crap. am i doing something wrong? i'm following the directions exactly.. but my red, green AND blue hot pixels are all staying put.
:\
Posted 35 months ago.
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I've bought a 500D just few days ago and the hot pixel or whatever it is showed up on all the photos I've taken. The routine you described solved that problem. Thanks a lot! :)
Posted 17 months ago.
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Wow! A miracle, I was so pissed when I just bought my EOS Rebel T3i and I noticed a hot pixel when recording video but this fixed the issue! Thanks
Originally posted 7 months ago.
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TEENWOLFE edited this topic 7 months ago.
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I can confirm that this worked for my Canon 60D. And thank goodness it did! I'm doing videography for a wedding tomorrow and I saw a dead pixel in all the rehearsal footage!!! Good thing it's fixed now :) thanks for the great advice!!!
Posted 3 months ago.
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