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Dead Pixel with my new G2?

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Eric60327

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I bought my G2 yesterday and so far I am very impressed with it, but I found what I think to be a "dead" pixel. The pixel is on all my shots (x = 1195, y = 1144) and of green color.

Is it normal to have a dead pixel like that? If it is a dead pixel of course! What should I do?

I think I have read somewhere that it would be possible for Canon to "map" the dead pixel and thus remove it from my pictures. Is it true? I would prefer this solution instead of exchanging my camera (which could take a lot of time since they are hard to get).

I made some of my pictures available at http://photos.yahoo.com/eboule if you want to check. I also took a picture with the lens cap on to see if there are more hot or dead pixels... so far there is only one.

Thank you,
Eric.
 
Eric said:
I bought my G2 yesterday and so far I am very impressed with it,
but I found what I think to be a "dead" pixel. The pixel is on all
my shots (x = 1195, y = 1144) and of green color.

Is it normal to have a dead pixel like that? If it is a dead pixel
of course! What should I do?

I think I have read somewhere that it would be possible for Canon
to "map" the dead pixel and thus remove it from my pictures. Is it
true? I would prefer this solution instead of exchanging my camera
(which could take a lot of time since they are hard to get).

I made some of my pictures available at
http://photos.yahoo.com/eboule if you want to check. I also took a
picture with the lens cap on to see if there are more hot or dead
pixels... so far there is only one.
Click to expand...
Hi Eric,

I have the exact same issue with my G1 and almost identical to yours, it is my understanding that this is a stuck pixel and have heard that it cannot be mapped out. I belive that the CCD ? has to be replaced but I am not certain of this. Mine is still under warranty and plan on sending it back to Canon however, I have a slight fear that in doing so I may end up with a larger problem with hot, dead or even more stuck pixels, so I may consider living with it as it really isn't that bad. I will be anxious to read other replys to your post concerning these stuck pixels.

BoB
 
It is possible for Canon to map out pixels. But, I would take the camera back to where I bought it and exchange it since you have only had it for a few days and it contains an obvious defect. You might want to print a picture which shows the defect just to make it easier on the salesman at the store.
Eric said:
I bought my G2 yesterday and so far I am very impressed with it,
but I found what I think to be a "dead" pixel. The pixel is on all
my shots (x = 1195, y = 1144) and of green color.

Is it normal to have a dead pixel like that? If it is a dead pixel
of course! What should I do?

I think I have read somewhere that it would be possible for Canon
to "map" the dead pixel and thus remove it from my pictures. Is it
true? I would prefer this solution instead of exchanging my camera
(which could take a lot of time since they are hard to get).

I made some of my pictures available at
http://photos.yahoo.com/eboule if you want to check. I also took a
picture with the lens cap on to see if there are more hot or dead
pixels... so far there is only one.

Thank you,
Eric.
Click to expand...
 
sparkyrwb said:
It is possible for Canon to map out pixels. But, I would take the
camera back to where I bought it and exchange it since you have
only had it for a few days and it contains an obvious defect. You
might want to print a picture which shows the defect just to make
it easier on the salesman at the store.
Click to expand...
I agree. So far, I haven't found any dead pixels on my new G2, but would return it if I found one.

Bryan
 
Eric,

I had the same problem with my G1 - 4 stuck pixels. I sent it back under warranty and the CCD was replaced - no mapping out, I spoke to the repair person myself.

Canon Germany told me that there should not be any hot pixel on the CCD. Anything else is a warranty issue.

Regards
Martin
--------------------------------------------------------------
G1 Image galleries and Travel reports:
http://www.drmhoppe.de
Eric said:
I bought my G2 yesterday and so far I am very impressed with it,
but I found what I think to be a "dead" pixel. The pixel is on all
my shots (x = 1195, y = 1144) and of green color.

Is it normal to have a dead pixel like that? If it is a dead pixel
of course! What should I do?

I think I have read somewhere that it would be possible for Canon
to "map" the dead pixel and thus remove it from my pictures. Is it
true? I would prefer this solution instead of exchanging my camera
(which could take a lot of time since they are hard to get).

I made some of my pictures available at
http://photos.yahoo.com/eboule if you want to check. I also took a
picture with the lens cap on to see if there are more hot or dead
pixels... so far there is only one.

Thank you,
Eric.
Click to expand...
 
I have a question Eric. I have looked at your pic in full size it shows aborations and plenty of purple fringing which most pics on just about any camera show. Thing is though you don't see this when it is printed. Does the dead pixel show up when printed?To be honest I could not see your green pixel if it is that small why worry if the prints are OK.
Eric said:
I bought my G2 yesterday and so far I am very impressed with it,
but I found what I think to be a "dead" pixel. The pixel is on all
my shots (x = 1195, y = 1144) and of green color.

Is it normal to have a dead pixel like that? If it is a dead pixel
of course! What should I do?

I think I have read somewhere that it would be possible for Canon
to "map" the dead pixel and thus remove it from my pictures. Is it
true? I would prefer this solution instead of exchanging my camera
(which could take a lot of time since they are hard to get).

I made some of my pictures available at
http://photos.yahoo.com/eboule if you want to check. I also took a
picture with the lens cap on to see if there are more hot or dead
pixels... so far there is only one.

Thank you,
Eric.
Click to expand...
 
Bryan, it looks like this was an 8 second exposure, right? Since the noise reduction would be in effect, I would suggest trying a shutter speed slower than 1.3 seconds to test for dead pixels. That said, the noise reduction seemed to do a great job! :-)

Travis
 
Travis said:
Bryan, it looks like this was an 8 second exposure, right? Since
the noise reduction would be in effect, I would suggest trying a
shutter speed slower than 1.3 seconds to test for dead pixels.
That said, the noise reduction seemed to do a great job! :-)
Click to expand...
Don't know why it said 8 seconds, because I exposed the shot for over 30 seconds. I'll try another quicker speed. :)

Bryan
 
Travis said:
Bryan, it looks like this was an 8 second exposure, right? Since
the noise reduction would be in effect, I would suggest trying a
shutter speed slower than 1.3 seconds to test for dead pixels.
That said, the noise reduction seemed to do a great job! :-)
Click to expand...
I heard that many times the hot pixels don't show until you've got an exposure of more than 5 seconds or so. That's why I did it that way.

Here's another. See any now?

 
BryanS said:
Don't know why it said 8 seconds, because I exposed the shot for
over 30 seconds. I'll try another quicker speed. :)
Bryan
Click to expand...
I was looking in the wrong place of the EXIF tag, my fault. It shows 15 seconds for the exposure time. How did you get it to expose over 30 seconds when the min shutter is 15 sec? (scratching head)

Travis
 
Hi. I just got my G2. Can you tell me what are the exact tests you did to test for hot or dead pixels (lens cap on, settings, etc.)? Thanks.
Bryan Siverly said:
Travis said:
Bryan, it looks like this was an 8 second exposure, right? Since
the noise reduction would be in effect, I would suggest trying a
shutter speed slower than 1.3 seconds to test for dead pixels.
That said, the noise reduction seemed to do a great job! :-)
Click to expand...
I heard that many times the hot pixels don't show until you've got
an exposure of more than 5 seconds or so. That's why I did it that
way.

Here's another. See any now?

Click to expand...
 
Will,

do a search on the Forum for Hot Pixels. There was a previous thread that linked to a good article on this.

It explains the different pixel faults and how to look for them.

I have a "Stuck" pixel on my G1. It is a single white pixel on all shots (except where that area is bright!), with the surrounding four pixels slightly over exposed with a pink tinge. It is very small and innocuous at the edge, so I am ignoring!

However, if I do the "hot pixel" test (lens cap "on") with 1.3 seconds or more shutter the noise cancelling feature stops ANY wrong pixels, including the "stuck" one appearing (all pixels black).

Below 1.3 seconds the stuck pixel returns, but there are NO other pixels wrong (all pixels black except small pettern described above).

The article I mentioned talks about this being a common problem. Returning your DC may result in jumping from fring pan to fire??

Compromising on 3.3M pixels (as opposed to film 50MP+), I'm not worried about one less!
 
listen I'd rather enjoy the toy...

I've sent my camera in 4 times for this issue. Each time it came back with another hot pixel or two on the "new" ccd and a note saying it was within factory specs! Why didn't they map mine out?

SO THE ONLY THING LEFT TO SAY IS "I GIVE UP"

I know first hand there are no ccd's that are free of defects...it's a matter of time when they show and that's a fact. (roughly a year)
Andy Goldney said:
Will,

do a search on the Forum for Hot Pixels. There was a previous
thread that linked to a good article on this.

It explains the different pixel faults and how to look for them.

I have a "Stuck" pixel on my G1. It is a single white pixel on all
shots (except where that area is bright!), with the surrounding
four pixels slightly over exposed with a pink tinge. It is very
small and innocuous at the edge, so I am ignoring!

However, if I do the "hot pixel" test (lens cap "on") with 1.3
seconds or more shutter the noise cancelling feature stops ANY
wrong pixels, including the "stuck" one appearing (all pixels
black).

Below 1.3 seconds the stuck pixel returns, but there are NO other
pixels wrong (all pixels black except small pettern described
above).

The article I mentioned talks about this being a common problem.
Returning your DC may result in jumping from fring pan to fire??

Compromising on 3.3M pixels (as opposed to film 50MP+), I'm not
worried about one less!
Click to expand...
 
Compared with other digital cameras (same price, same quality), I think the purple fringing is minimal with the G2. Purple fringing was, for me, one of the biggest problems of the G1 and the reason why I waited for the G2.

The stuck pixel produced by my G2 is visible enough for me and it is always there... I can see it easily, without searching for it, on most of my pictures.

But you are right, it is probably not visible on a 4x6 print, but I am not sure about an 8x10, which is why I bought the 4MP G2. I will test that before exchanging it. I could hand-up with a G2 that has more stuck pixels than the one I already have! I have 30 days to exchange it, so plenty of time to decide if I keep it or not!

Regards,
Eric.
eric noack said:
Eric said:
I bought my G2 yesterday and so far I am very impressed with it,
but I found what I think to be a "dead" pixel. The pixel is on all
my shots (x = 1195, y = 1144) and of green color.

Is it normal to have a dead pixel like that? If it is a dead pixel
of course! What should I do?

I think I have read somewhere that it would be possible for Canon
to "map" the dead pixel and thus remove it from my pictures. Is it
true? I would prefer this solution instead of exchanging my camera
(which could take a lot of time since they are hard to get).

I made some of my pictures available at
http://photos.yahoo.com/eboule if you want to check. I also took a
picture with the lens cap on to see if there are more hot or dead
pixels... so far there is only one.

Thank you,
Eric.
Click to expand...
Click to expand...
 
I am returning my G2 because of a hot pixel, but I am concern that I might end up with something worse, and I don't want to be a day without my G2. So I have asked my retailer to send me a replacement and when I receive it and tested then I will return the one that has the worst CCD. I really hope that the replacement doesn't have any hot pixel.
vct said:
SO THE ONLY THING LEFT TO SAY IS "I GIVE UP"

I know first hand there are no ccd's that are free of
defects...it's a matter of time when they show and that's a fact.
(roughly a year)
Andy Goldney said:
Will,

do a search on the Forum for Hot Pixels. There was a previous
thread that linked to a good article on this.

It explains the different pixel faults and how to look for them.

I have a "Stuck" pixel on my G1. It is a single white pixel on all
shots (except where that area is bright!), with the surrounding
four pixels slightly over exposed with a pink tinge. It is very
small and innocuous at the edge, so I am ignoring!

However, if I do the "hot pixel" test (lens cap "on") with 1.3
seconds or more shutter the noise cancelling feature stops ANY
wrong pixels, including the "stuck" one appearing (all pixels
black).

Below 1.3 seconds the stuck pixel returns, but there are NO other
pixels wrong (all pixels black except small pettern described
above).

The article I mentioned talks about this being a common problem.
Returning your DC may result in jumping from fring pan to fire??

Compromising on 3.3M pixels (as opposed to film 50MP+), I'm not
worried about one less!
Click to expand...
Click to expand...
 
Delfin said:
vct said:
SO THE ONLY THING LEFT TO SAY IS "I GIVE UP"

I know first hand there are no ccd's that are free of
defects...it's a matter of time when they show and that's a fact.
(roughly a year)
Andy Goldney said:
Will,

do a search on the Forum for Hot Pixels. There was a previous
thread that linked to a good article on this.

It explains the different pixel faults and how to look for them.

I have a "Stuck" pixel on my G1. It is a single white pixel on all
shots (except where that area is bright!), with the surrounding
four pixels slightly over exposed with a pink tinge. It is very
small and innocuous at the edge, so I am ignoring!

However, if I do the "hot pixel" test (lens cap "on") with 1.3
seconds or more shutter the noise cancelling feature stops ANY
wrong pixels, including the "stuck" one appearing (all pixels
black).

Below 1.3 seconds the stuck pixel returns, but there are NO other
pixels wrong (all pixels black except small pettern described
above).

The article I mentioned talks about this being a common problem.
Returning your DC may result in jumping from fring pan to fire??

Compromising on 3.3M pixels (as opposed to film 50MP+), I'm not
worried about one less!
Click to expand...
Click to expand...
Click to expand...
 
all Olympus new 4Mp or over digicams have already equiped with "Active Pixel Mapping" --- i.e. they allow end-users to do map-out of dead pixels on their own !

There is NO NEED to send back to Service Center !

Well done Olympus !!!
 
I have suggested this to Canon. But, they say the pixel mapping software is not available to other than their technicians. Active pixel mapping is the RIGHT ANSWER. I personally don't understand what the downside of offering this software would be since it would make owners happier and reduce the number of returns. Hot pixels are inevitable, and the statistics dictate the probability will only increase with larger arrays. WELL DONE OLYMPUS. CANON-WAKE UP!!!!!!!
AVJason said:
all Olympus new 4Mp or over digicams have already equiped with
"Active Pixel Mapping" --- i.e. they allow end-users to do map-out
of dead pixels on their own !

There is NO NEED to send back to Service Center !

Well done Olympus !!!
Click to expand...
 
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