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DPChallenge Forums >> Hardware and Software >> A single hot pixel - should I be worried?
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12/31/2008 01:06:25 AM · #1
In this days old camera, I just saw a hot pixel at a fixed pixel location. It is like an almost saturated white dot. It appears in the same location in all the pictures.. in RAW, Fine JPEG, Normal Jpeg, etc.

I tried auto sensor cleaning, still the same.

I will soon add a picture that was taken with lens lid closed with a fast shutter speed to have a dark background avoiding a long exposure.

My question is: is it a concern? I can get it returned if it is.. it is barely days old.

Here is one image that shows the pixel at (xxxx, xxxx) in teh original image:



Message edited by author 2009-01-05 17:41:17.
12/31/2008 01:08:17 AM · #2
If it's barnd new i would return it...

I also have one on my D300 just left of centre and it's a red colour...it appeared a month or two ago
12/31/2008 01:20:16 AM · #3
There's no need to worry, hotness is not communicable. If it was, then you'd all be hot just from being near me.
12/31/2008 01:28:59 AM · #4
Originally posted by Mick:

There's no need to worry, hotness is not communicable. If it was, then you'd all be hot just from being near me.


:-)

12/31/2008 01:50:00 AM · #5
Originally posted by Mick:

There's no need to worry, hotness is not communicable. If it was, then you'd all be hot just from being near me.


Yea? Well I cannot go into a hardware store anymore--all the Stud Finders go off!

It's a blessing and a curse....
12/31/2008 01:50:44 AM · #6
I have a TON of hot pixels on my 30D. Shoot pinhole a couple of times and not only will you find sensor dust galore, but hot pixels as well. I never see them once I start working on a picture, though - ACR (the Photoshop software that opens RAW images) autocorrects them, it seems.
12/31/2008 02:03:22 AM · #7
Originally posted by Melethia:

I have a TON of hot pixels on my 30D. Shoot pinhole a couple of times and not only will you find sensor dust galore, but hot pixels as well. I never see them once I start working on a picture, though - ACR (the Photoshop software that opens RAW images) autocorrects them, it seems.


Thanks Deb. Even if I return this one, I cant be sure the next one wont have them. So.....
12/31/2008 03:15:32 AM · #8
Sometimes hot pixels can win ribbons.

Can't your camera map it out or something like that?
12/31/2008 03:31:43 AM · #9
Originally posted by Art Roflmao:

Sometimes hot pixels can win ribbons.


LOL Art!
In my case the hot pixel ended up in a real bad spot in my self portrait so ribbons were out of the question :P



12/31/2008 03:33:54 AM · #10
Originally posted by Art Roflmao:

Sometimes hot pixels can win ribbons.

Can't your camera map it out or something like that?


:-)

No the D90 only has a mode to capture a dust reference image.. nothing for hot pixels. If at all, there is a long exposure noise removal mode but that only works for long exposure shots.
12/31/2008 03:44:03 AM · #11
One update:

I figured that the hot pixel occurs ONLY when the exposure time is longer than 1/10th second. It disappears in normal high speed shots.

I can live with that.

:-) :-)

Message edited by author 2008-12-31 03:44:10.
12/31/2008 03:50:00 AM · #12
Then put it out of your mind and don't let it taint your excitement over your new toy.
12/31/2008 03:51:01 AM · #13
Originally posted by TrollMan:

Originally posted by Art Roflmao:

Sometimes hot pixels can win ribbons.


LOL Art!
In my case the hot pixel ended up in a real bad spot in my self portrait so ribbons were out of the question :P

Actually you are lucky the bad pixel hid that piece of spinach. :)
12/31/2008 08:38:49 AM · #14
Originally posted by Prash:

One update:

I figured that the hot pixel occurs ONLY when the exposure time is longer than 1/10th second. It disappears in normal high speed shots.

I can live with that.

:-) :-)


It might also be ISO related.
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