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Should I Worry About S30 Dead Pixels?

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PhilL139848

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After a couple of weeks using my new S30, I discovered a couple of dead pixels approximately centered horizontally, and a third of the way down vertically. Now that I know they are there, I always see them. The question is whether they will show once printed in full resolution (I still have to get some shots printed), and whether I should return the camera? Not knowing if this is a normal occurence or not, or if two dead pixels is better than average, I'm not sure if I'd get a better one if I returned the first. Thanks for any advice on this.
 
Do they the dead pixels bother you? Getting dead pixels is not good..Can you exchange the camera?
PhilL said:
After a couple of weeks using my new S30, I discovered a couple of
dead pixels approximately centered horizontally, and a third of the
way down vertically. Now that I know they are there, I always see
them. The question is whether they will show once printed in full
resolution (I still have to get some shots printed), and whether I
should return the camera? Not knowing if this is a normal occurence
or not, or if two dead pixels is better than average, I'm not sure
if I'd get a better one if I returned the first. Thanks for any
advice on this.
Click to expand...
 
I just used the Dead/Hot Pixel Test utility that I downloaded, and in fact they are not dead pixels, but rather "Hot" pixels (I should have known since they were white, not black). Anyway, at 1/60 seconds, the utility reported three hot pixels, while at slower speeds, it reported sometimes one, but mostly none. I guess I'll try having a couple of prints made to see what comes out of it.

Having said this, does anybody know if I should expect to get 0 dead/hot pixels on an S30 digicam?

Thanks
Remyy said:
PhilL said:
After a couple of weeks using my new S30, I discovered a couple of
dead pixels approximately centered horizontally, and a third of the
way down vertically. Now that I know they are there, I always see
them. The question is whether they will show once printed in full
resolution (I still have to get some shots printed), and whether I
should return the camera? Not knowing if this is a normal occurence
or not, or if two dead pixels is better than average, I'm not sure
if I'd get a better one if I returned the first. Thanks for any
advice on this.
Click to expand...
Click to expand...
 
weird... it should be the other way around...as you use slower speeds approaching 1.3 sec and or increasing asa, hot pixels should increase.

really @ asa50 1sec. you should have 0 hot, 0 dead. My s30 is near one year old and so far so good.
PhilL said:
Having said this, does anybody know if I should expect to get 0
dead/hot pixels on an S30 digicam?

Thanks
Remyy said:
PhilL said:
After a couple of weeks using my new S30, I discovered a couple of
dead pixels approximately centered horizontally, and a third of the
way down vertically. Now that I know they are there, I always see
them. The question is whether they will show once printed in full
resolution (I still have to get some shots printed), and whether I
should return the camera? Not knowing if this is a normal occurence
or not, or if two dead pixels is better than average, I'm not sure
if I'd get a better one if I returned the first. Thanks for any
advice on this.
Click to expand...
Click to expand...
Click to expand...
--
S30 powershot user
http://www.pbase.com/vct_va
 
Well, it seems that the three or so hot pixels get worse (in terms of luminance) as the shutter speed decreases, and then at 1 sec or greater, they disappear. Is this indeed a noise reduction algorithm kicking in?

The question remains: What do I do about them? Is there an algorithm somewhere that can be used to remap them? Or do I just exchange the camera?

Thanks
Vic Taillon said:
PhilL said:
Having said this, does anybody know if I should expect to get 0
dead/hot pixels on an S30 digicam?

Thanks
Remyy said:
PhilL said:
After a couple of weeks using my new S30, I discovered a couple of
dead pixels approximately centered horizontally, and a third of the
way down vertically. Now that I know they are there, I always see
them. The question is whether they will show once printed in full
resolution (I still have to get some shots printed), and whether I
should return the camera? Not knowing if this is a normal occurence
or not, or if two dead pixels is better than average, I'm not sure
if I'd get a better one if I returned the first. Thanks for any
advice on this.
Click to expand...
Click to expand...
Click to expand...
--
S30 powershot user
http://www.pbase.com/vct_va
Click to expand...
 
PhilL139848 said:
PhilL139848 said:
PhilL139848 said:
PhilL139848 said:
PhilL wrote:
Click to expand...
Click to expand...
Click to expand...
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The question is whether they will show once printed in full
PhilL139848 said:
PhilL139848 said:
PhilL139848 said:
PhilL139848 said:
PhilL139848 said:
resolution (I still have to get some shots printed), and whether I
should return the camera? Not knowing if this is a normal occurence
or not, or if two dead pixels is better than average, I'm not sure
if I'd get a better one if I returned the first. Thanks for any
advice on this.
Click to expand...
Click to expand...
Click to expand...
--
S30 powershot user
http://www.pbase.com/vct_va
Click to expand...
Click to expand...
You cannot fix dead or hot pixels. The Cam has to be sent for repair to get them remapped. I had to have Canada repair two dead pixels on my s30 also. They did a good job.

--
Andj
Canon G3 and former S30 Owner
Gallery: http://www.pbase.com/andj/
 
My G3 has either one (or a couple of them) in one position making a small RED dot on the same location on every picture I take. You said yours is white and not black. Home come mine is red? Anyone?
PhilL said:
Having said this, does anybody know if I should expect to get 0
dead/hot pixels on an S30 digicam?

Thanks
Remyy said:
PhilL said:
After a couple of weeks using my new S30, I discovered a couple of
dead pixels approximately centered horizontally, and a third of the
way down vertically. Now that I know they are there, I always see
them. The question is whether they will show once printed in full
resolution (I still have to get some shots printed), and whether I
should return the camera? Not knowing if this is a normal occurence
or not, or if two dead pixels is better than average, I'm not sure
if I'd get a better one if I returned the first. Thanks for any
advice on this.
Click to expand...
Click to expand...
Click to expand...
--
Best Regards!
Jay
 
In fact, I've got two whites and a blue...
Jay said:
PhilL said:
Having said this, does anybody know if I should expect to get 0
dead/hot pixels on an S30 digicam?

Thanks
Remyy said:
PhilL said:
After a couple of weeks using my new S30, I discovered a couple of
dead pixels approximately centered horizontally, and a third of the
way down vertically. Now that I know they are there, I always see
them. The question is whether they will show once printed in full
resolution (I still have to get some shots printed), and whether I
should return the camera? Not knowing if this is a normal occurence
or not, or if two dead pixels is better than average, I'm not sure
if I'd get a better one if I returned the first. Thanks for any
advice on this.
Click to expand...
Click to expand...
Click to expand...
--
Best Regards!
Jay
Click to expand...
 
The fact is, even after repair hot pixels WILL reoccur. It's a matter of time, that's all. They try to give you a ccd that is good up to the point where the nr kicks in.

If it bothers you all the time, it's worth the exchange. I would also consider an extended warranty to cover costs after canon's runs out.
PhilL said:
Jay said:
PhilL said:
Having said this, does anybody know if I should expect to get 0
dead/hot pixels on an S30 digicam?

Thanks
Remyy said:
PhilL said:
After a couple of weeks using my new S30, I discovered a couple of
dead pixels approximately centered horizontally, and a third of the
way down vertically. Now that I know they are there, I always see
them. The question is whether they will show once printed in full
resolution (I still have to get some shots printed), and whether I
should return the camera? Not knowing if this is a normal occurence
or not, or if two dead pixels is better than average, I'm not sure
if I'd get a better one if I returned the first. Thanks for any
advice on this.
Click to expand...
Click to expand...
Click to expand...
--
Best Regards!
Jay
Click to expand...
Click to expand...
--
S30 powershot user
http://www.pbase.com/vct_va
 
Vic Taillon said:
The fact is, even after repair hot pixels WILL reoccur. It's a
matter of time, that's all. They try to give you a ccd that is
good up to the point where the nr kicks in.
If it bothers you all the time, it's worth the exchange. I would
also consider an extended warranty to cover costs after canon's
runs out.
Click to expand...
I have two dead pixels on my G2. I see them on my monitor, but when I print them on photopaper (in lab, not at home) I cannot see them. So i don´t bother. If you see them on print, exchange it. If not, forget it. Nobody´s perfect! Even digicams...

Robert Damli
Labmanager (Noritsu 2901)
Ur & Foto Magasinet
 
A dead pixel usually shows up not as one pixel but as a blob because of Bayer interpolation (I don't know exactly what this is technically, but each pixel gets its color by looking at the others or something). Your camera shouldn't do this, it's a manufacturing flaw, and you should be able to return it for a different camera rather than the hassle of sending it in for repair. When I got my S30, after a few weeks it had a dead pixel glob and Dell sent me a new one and I then sent the original back in the same box.

Bob
--
Bob Gates, Syracuse NY USA
Canon S30 photos:
http://www.pbase.com/bgates
 
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