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How to detect Dead/Hot Pixel on your sensor?
+3
KH
simmon
maxgoh
7 posters
Page 1 of 1
How to detect Dead/Hot Pixel on your sensor?
by maxgoh Wed Jul 29, 2009 10:07 am
1. Put your Lens Cap on.
2. Set to Manual focus.
3. Disable AutoISO. Manually set ISO to 3200.
4. Take a photo.
5. View the image from your camera. Zoom in a little.
6. Try to spot blue/red/green dots. If it is there. Congratulations! You have got Dead/Hot Pixel.
2. Set to Manual focus.
3. Disable AutoISO. Manually set ISO to 3200.
4. Take a photo.
5. View the image from your camera. Zoom in a little.
6. Try to spot blue/red/green dots. If it is there. Congratulations! You have got Dead/Hot Pixel.
maxgoh- Field Marshal
- Join date : 2009-07-06
Location : Melaka, Malaysia, -
Re: How to detect Dead/Hot Pixel on your sensor?
by simmon Wed Jul 29, 2009 11:27 am
Wow, i hv tried. Sad that i don't hv 
simmon- Space Ensign
- Join date : 2009-07-09
Age : 80 -
Re: How to detect Dead/Hot Pixel on your sensor?
by maxgoh Wed Jul 29, 2009 11:46 am
i havent tested also~~~~~ hhaha hope i have nothing to sad about la..
maxgoh- Field Marshal
- Join date : 2009-07-06
Location : Melaka, Malaysia, -
Re: How to detect Dead/Hot Pixel on your sensor?
by KH Wed Jul 29, 2009 2:33 pm
Thnx Max for sharing!! My gear is working properly 
KH- Soldier
- Join date : 2009-07-20
Location : KUL -
Re: How to detect Dead/Hot Pixel on your sensor?
by maxgoh Wed Jul 29, 2009 2:35 pm
wow good to hear that~~~~~
maxgoh- Field Marshal
- Join date : 2009-07-06
Location : Melaka, Malaysia, -
Re: How to detect Dead/Hot Pixel on your sensor?
by daisuke Thu Oct 01, 2009 1:08 pm
lol, i found this technique accidentally and i think i shared with you before max. It's so colorful, haha.
With this technique it won't usually show but try this : instead of just setting the ISO and shooting with whatever shutter speed you are on, try a long shutter speed eg. 10 secs and ISO 3200. Turn off "long exposure noise reduction" .
With this technique it won't usually show but try this : instead of just setting the ISO and shooting with whatever shutter speed you are on, try a long shutter speed eg. 10 secs and ISO 3200. Turn off "long exposure noise reduction" .
daisuke- Trainee
- Join date : 2009-09-18
Location : Japan
Re: How to detect Dead/Hot Pixel on your sensor?
by daisuke Thu Oct 01, 2009 1:20 pm
It might not be the the camera/sensor defect but more of the performance of the camera. I hope someone with more knowledge on this subject shed some light on this. Am really curious.
daisuke- Trainee
- Join date : 2009-09-18
Location : Japan
Re: How to detect Dead/Hot Pixel on your sensor?
by derricklim Thu Oct 01, 2009 1:49 pm
i tried mine when i bought the camera. must turn off the noise reduction scheme.
however, after long working, your sensor will get heat up, and if you do the test again. you will see "dead pixel". it is not in this case. it is heat/hot pixel instead...
just to share some little thing i know from friend...
however, after long working, your sensor will get heat up, and if you do the test again. you will see "dead pixel". it is not in this case. it is heat/hot pixel instead...
just to share some little thing i know from friend...
derricklim- Colonel
- Join date : 2009-07-16
Location : Melaka, KL -
Re: How to detect Dead/Hot Pixel on your sensor?
by derricklim Thu Oct 01, 2009 1:57 pm
daisuke wrote:lol, i found this technique accidentally and i think i shared with you before max. It's so colorful, haha.
With this technique it won't usually show but try this : instead of just setting the ISO and shooting with whatever shutter speed you are on, try a long shutter speed eg. 10 secs and ISO 3200. Turn off "long exposure noise reduction" .
correct me if i'm wrong, it could be the heat/hot sensor effect, maybe...
derricklim- Colonel
- Join date : 2009-07-16
Location : Melaka, KL -
Re: How to detect Dead/Hot Pixel on your sensor?
by derricklim Thu Oct 01, 2009 2:00 pm
oh yes, add on...
in consumer sensor application, if your dead pixels are less then 5nos, you won't get refund or replacement...
not sure for slr... i suppose should be zero dead pixel since it is above consumer applications..
in consumer sensor application, if your dead pixels are less then 5nos, you won't get refund or replacement...
not sure for slr... i suppose should be zero dead pixel since it is above consumer applications..
derricklim- Colonel
- Join date : 2009-07-16
Location : Melaka, KL -
Re: How to detect Dead/Hot Pixel on your sensor?
by CY Thu Oct 01, 2009 2:03 pm
I checked on mine before. It did appear at 3200 ISO and about 10 sec shutter. But at normal shooting condition, 200-800 ISO, 1 second shutter, did not observe any.
CY- Space Ensign
- Join date : 2009-09-06
Age : 38
Location : Melaka
Re: How to detect Dead/Hot Pixel on your sensor?
by Jameslye Thu Oct 01, 2009 2:28 pm
how to remove the dead pixel if found?? i think mind got a tiny dot when i hit iso 1600,will it be dust or dead pixel?
Jameslye- General
- Join date : 2009-08-04
Age : 42
Location : Malacca/PJ -
Re: How to detect Dead/Hot Pixel on your sensor?
by CY Thu Oct 01, 2009 3:30 pm
Can't remove, only way is to send back to Nikon to do pixel mapping. They will turn off that particular pixel.
If not mistaken, some DSLR will automatically do pixel mapping. Not sure if it is Canon or Sony. But for Nikon, definitely need to send back to service center for it. Alternatively, there are softwares that could remove these hot/dead pixels.
If not mistaken, some DSLR will automatically do pixel mapping. Not sure if it is Canon or Sony. But for Nikon, definitely need to send back to service center for it. Alternatively, there are softwares that could remove these hot/dead pixels.
CY- Space Ensign
- Join date : 2009-09-06
Age : 38
Location : Melaka
Re: How to detect Dead/Hot Pixel on your sensor?
by derricklim Thu Oct 01, 2009 3:44 pm
yes, this is the approach... because dead pixel is wafer level defects..
derricklim- Colonel
- Join date : 2009-07-16
Location : Melaka, KL -
Re: How to detect Dead/Hot Pixel on your sensor?
by CY Thu Oct 01, 2009 3:55 pm
I just noticed, James case a bit specialJameslye wrote:how to remove the dead pixel if found?? i think mind got a tiny dot when i hit iso 1600,will it be dust or dead pixel?
. His DSLR went through special "treatment" before hahaha!
CY- Space Ensign
- Join date : 2009-09-06
Age : 38
Location : Melaka
Re: How to detect Dead/Hot Pixel on your sensor?
by derricklim Thu Oct 01, 2009 4:00 pm
what special treatment?
derricklim- Colonel
- Join date : 2009-07-16
Location : Melaka, KL -
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