blue dot in all images

Bad pixels? Speck of dust under the lens?

http://www.flickr.com/photos/weretable/115577875/

Near the bottom left corner, the original file size is available to
view.

weretable and the undead chairs writes:

Bad pixels? Speck of dust under the lens?

http://www.flickr.com/photos/weretable/115577875/

Near the bottom left corner, the original file size is available to
view.

Could be a bad pixel. Take a shot with the lens covered. If it still
shows up you have a bad pixel.

--
Måns Rullgård

weretable and the undead chairs wrote:

I saw nothing, though I downloaded the original size image. What do you
mean by "in all images"? Others on same site?

Perhaps you have a spot on your monitor, or a bad stuck pixel there. Turn
off wallpaper and set desktop color to black to verify.

--
Anti-Spam address: my last name at his dot com
Charles Gillen -- Reston, Virginia, USA

In article ,
Måns Rullgård wrote:

weretable and the undead chairs writes:

Bad pixels? Speck of dust under the lens?

http://www.flickr.com/photos/weretable/115577875/

Near the bottom left corner, the original file size is available to
view.

Could be a bad pixel. Take a shot with the lens covered. If it still
shows up you have a bad pixel.

And then what? The computer monitor and TV manufacturers consider a few
dead pixels in a display to be acceptable, and won't do warranty service
for one or two. Do the camera manufacturers feel the same way?

Måns Rullgård wrote:

weretable and the undead chairs writes:

Bad pixels? Speck of dust under the lens?

http://www.flickr.com/photos/weretable/115577875/

Near the bottom left corner, the original file size is available to
view.

Could be a bad pixel. Take a shot with the lens covered. If it still
shows up you have a bad pixel.

Ah, had not thought of that. Yeah, still there. Thanks.

I see the dot. Looks like a bad pixel. Just get rid of it in photoshop
(or some editing tool). If the camera is still under warranty, all they
will do is map it out of existence. Doubtful they will replace the
sensor. $0.02

weretable and the undead chairs wrote:

Near the bottom left corner

OK, I finally saw it on very high magnification. No big deal... one camera
pixel stuck on blue. You only noticed it because this was a night shot, and
you could have taken 1,000 shots during the day and never noticed it at all.

Bad pixels usually are more apparent in longish exposures (yours was 1/8th)
and higher ISOs (yours was set on Auto, probably maximum at night without
flash).

Don't sweat just one out of five million pixels in the moderately priced
S2IS.

weretable and the undead chairs wrote:

Bad pixels? Speck of dust under the lens?

http://www.flickr.com/photos/weretable/115577875/

Near the bottom left corner, the original file size is available to
view.

Yes, it looks like a hot pixel, or small group of pixels. Taking the
image right up in Photoshop, I counted the blue 'dot' as being 8 pixels
wide by about 5 high. This is not uncommon with long exposures such as
this shot would have taken. It probably won't show up with normal
shots.

Colin D.

"weretable and the undead chairs" wrote in
message ...
Bad pixels? Speck of dust under the lens?

http://www.flickr.com/photos/weretable/115577875/

Near the bottom left corner, the original file size is available to
view.

Try shooting under normal lighting conditions to see if it is still visible.
If it stays, it is a stuck pixel. if not it is a hot pixel that shows only
in longer exposures. Hot pixels are a fact of digital. You may be able to
have it mapped out, but another one may appear at a later time. Stuck pixels
are rare and appear in all lighting conditions.
-S

Roy Smith wrote:
...
And then what? The computer monitor and TV manufacturers consider a few
dead pixels in a display to be acceptable, and won't do warranty service
for one or two. Do the camera manufacturers feel the same way?

Happened to a friend of mine with a brand new Nikon D70. I helped him
set up his software and USB card reader the day he opened the box and we
discovered a red dot on all his test images. We quickly took the camera
back to the store (Downtown Camera in Toronto). The salesperson took an
image with the lens cap on - loaded the image on a computer and there
was the red dot in a sea of black. He immediately exchanged a new boxed
camera for this one. Nice to deal with a brick and mortar store and
have real service.


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