Are blue spots dust or bad pixels?

[Debby]

Hi all,

I'm new to the group. And new to my s2, natch.

As I check my initial images, i see some blue dot areas.

( only show up at full size). I read some dust posts,

but these seem more like an lcd monitor I had with some bad

pixels.

Any comments or advice?

thanks

Deb

[Seachicken]

Hi,

I think your blue spots are likely to be stuck or hot pixels. It is quite normal to have a *few* of these on a 6Mpixel sensor. I think dust would show up dark and blurry, rather than blue.

I've read somewhere that it may be possible to have these 'mapped out' by Fuji if they annoy you.

This link (http://webpages.charter.net/bbiggers/DCExperiments/html/hot_pixels.html) has a lot of info on this.

Andy.

[Debby]

thanks for reply.

From just glancing at that article I would guess I have
"stuck" pixels. They say it's quite common.

I basically noticed the spot (s? ) at the bottom of frame.
'Natch I could photoshop out. But of course I'm dissapointed
its not a "perfect" s2.

I don't think you could even notice them on less than an
8 x 10 print. But larger sizes you would.

How many have this?. If I return camera, I'm guessing the
next one could have this too ( but maybe in a worse area, like
near center. }

IN your opinions, should I ?

1. Should I immediately return camera to dealer for exchange?.
[or?]
2 Learn to live with it.
[or?]
3. Let Fuji fine tune if I ever have to send CCD in for a clean?

thanks so much!

Deb

[Seachicken]

I have heard that these are common.. but when my camera was new (2 weeks ago) .. I took a black shot at a fast shutter speed to see if I had stuck pixels.

I inspected the image for a minute or two zoomed and unzoomed, but couldn't find any. Maybe I am very lucky, or just too dumb to notice them.

However, since then the camera has made the occasional odd bright spot in my images... but not on every image.

I think what you should do depends on you... I'm not sure what I would do in your shoes. I can live with the occasional spots.. 2 secs with a clone tool and they're history, but if they're in every shot it might be different.

I'd be interested to hear whether other members have had problems with stuck pixels.

Andy.

[Debby]

I just makes me mad at fuji quality control.

apparently the standard "fix" from manufacturers is NOT a new
ccd. They merely map out the bad pixels in your software.

So, could be done at any time, i guess.

But youd think they could run a quick program on each camera,
that would examine/ test the pixel count and which to fix - if any -
so the buyer doesnt freak!

But guess, what? the author of that article says these can
appear down the line. After one year, a bright pink one appeared
on his new nikon digital.

So..................

anybody else have these? ( check images at full size)

thanks

Deb

[Iain]

I also have a stuck pixel, which seems to be getting worse. You will see in one of my other threads that Fuji UK say that the industry standard is an acceptable 3 pixels on a CCD. Spending £2000UK does not really make this acceptable.

Iain

[SSonnentag]

I have one fairly bright hot pixel and two dim ones (only visible if I use levels to make them stand out), but they aren't visible unless the shot is of a solid dark color. I don't feel it is an issue for my shooting habits. I can only remember two shots that I had to clone out one hot pixel. In all the others there is so much other image info that you'd be hard pressed to find the stuck one(s).

Now what really gets to me are hot and dead pixles on LCD monitors. Just try editing out those spots with PhotoShop! ;)

Shawn

[Seachicken]

I think mapping out stuck pixels would be an excellent solution. When mapped out, I assume the camera's software simply turns off the offending pixel, and makes up a sensible value for it from its neighbours.

Since the camera makes up values for six million extra pixels in every shot, this extra one it has to make up is not going to be noticable.

I found this (http://www.tawbaware.com/pixelzap.htm) shareware program ($15) that is able to map out pixels from jpg files using a map you create. It also can auto remove hot pixels.

Though in-camera mapping out has got to be preferable.

Andy.

[Eddie]

I had a bleu one at the bottom of the frame on my S1, but this new S2 sensor is simply perfect. Must be a mather of luck...:)

[Andre]

I just returned my two-week old S2 to the store because of a hot pixel. They were nice enough to exchange it, even though they spoke to Fuji about it, and Fuji would do nothing.

Unfortunately, the replacement has TWO stuck pixels. ONe white, and one red. I am very frustrated. If the two I got both had a problem, then there's something wrong with Fuji's quality-control.

I will speak to the store again, but I guess I wouldn't blame them if they don't want to do another exchange.

Is it just me, or do I have a right to be p'ed off after spending $3000CDN?

Based on this, I'd think twice about buying another Fuji product.

[traumlandschaft]

Hello everybody - and expecially Andre,

I was not really following this thread, but at the end I have to say something:

1. My S2 also has 2 hot pixels. Mine start to come out at about 1/4 sec. - if the exposure time is longer, you see some more, let's say 6 at 4 sec. With longer exposure times the camera maps them out automatically.
2. I found them because of the threads regarding hot pixels - otherwise I would not even notice, because I normally do not sit in front of my Monitor and count them out.

So, based on those two points:

We are all using a camera with 12 MPix - so please stop complaining about one or two hot Pixels! You are talking about problems in an area less than 1 ppm - if you try to blame the supplier for this, than it's ridiculous.

So, please let's return to make pictures - indian summer is such a nice time to do this :-)

If anybody want's to kill me for my opinion: please do not, because it's just an opinion.

Regards

traumlandschaft

[Eddie]

Traum....

You are absolutely right!

[Andre]

My bad pixels show up all the time, and in 6MP mode. I think it should be perfect out of the box. If it develops hot pixels after some use - like after a few months - that would be acceptable, but I still say it should be perfect when brand-spanking new. Especially considering the price.