Advice on hot pixels (brand new 550d)

Chr1stof

Chr1stof

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Name
Chris
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Hi all

I have been reading up on stuck/dead/hot pixels after spotting some problems with my new 550d. Its only a few weeks old and has shot 320 images.
I have taken a shot with the cap on to show the problem and would appreciate your advice before I approach the dealer. There are a few white ones, at least one small orange one and a rather large orange one.
Is it just something we have to live? Are these excessive for a new camera?
Whats annoying is that I noticed the orange blob on an image without it even being zoomed in :(

Full size image download
http://www.speedyshare.com/files/25466657/IMG_0320.JPG


Flickr


5222372236_b2afe204ea_z.jpg
 
I use to get red ones years ago on a Fuji S2 Pro. It was always durring long exposures (20+ secs). I was told at the time to expect this on digials. Thought things may have progressed since.
 
Nothing wrong :)
es there's a couple - How often do you shoot at the settings you just did? Rarely if ever I bet? We all get the odd couple I think.
 
Do a manual sensor clean and see if that helps.
 
The one above is a 30 sec exposure as you have probably spotted from the exif, I do like my night shoots whic is why Im a bit miffed :(

I have just done a test shot @ 2secs, nothing visible. Is this likely to get worse the more long exposures I do to the point its visible on "normal" day shoots at faster shutter speeds?
I havent tried any 30 second plus yet, Im guessing it would be even more noticable!
 
I could see two dead (white tiny) and two hot (large orange).

If unhappy, and as your primary use is night shots, then take it back.
 
My 5D2 came with loads of hot and stuck pixels. I had the sensor replaced under warranty.

If your unhappy then send it to canon. Chances are if you take it back to the shop you will just get fobbed off.
 
Turn on "Long Exposure Noise reduction"

That's what it's for.
The camera will then take another 30 second exposure after your shot and sutract that from the first.
 
Would anyone care to post a a 30 sec exposure with the lens cap on for comparison?
Thanks for all the answers, I saw the DPR thread and tried that but it made no difference.
 
Dead pixels appear at all exposures. Hot pixels at longer exposures. I don't think you have anything to worry about.
 
Started panicking for a second.
Took a 30 second exposure, and the quick preview came up on the computer.
All this brown fuzz over the whole of the picture.



Quick wipe of the screen with my finger confirmed it was dust though :)

Bummer is, that it looks like I have a lot of hot pixels by that test. I haven't actually noticed it though on normal photos.
File is here, 30 seconds, iso 100, eyepiece covered.

http://www.speedyshare.com/files/25499323/_MG_2943.CR2
 
Thanks for posting the image, seems like quite a design flaw in such an expensive item doesnt it? Bit cheesed tbh :(
 
I'm sure that we all have dead / hot pixels if we look that closely :) They can easily be dealt with as mentioned above or with the cloning tool. As FITP said though, the other 17,999,996 are OK. If you do the maths, 4 fomr 18 million is a miniscule percentage of failure rate and probably well within manufacturing tolerance. Get out there, take the pics you love and learn to love the camera. The chances are if you exchange it there'll be some on another camera is you really look for them.
 
Yes EVERY camera will have hot pixels with a 30s exposure.
 
Fair enough, I think my dealer already thinks Im the customer from hell after all the hassle with my last camera :)
 
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