That's interesting. The artifact is very much like one I saw on my first
K7, which went back under warranty. In my case, the band was light, not
dark, and happened in every frame mostly taken out doors. I wonder if
there could be a subtle or latent flaw in the sensor that is susceptible
to EMI? Are you *sure* it has not happened before? At least it is near
the edge of the frame - in my case that subtle band went smack down the
middle of the fram (and it still took me 1000 exposures to notice it.)
On 1/18/2012 9:23 AM, Collin Brendemuehl wrote:
Here is an example (full, so have bandwidth before clicking)
http://www.brendemuehl.net/images/IMG16533.JPG
Just a couple of pixels wide, but affecting some parts of the image.
and here is just the upper left corner where you can see the band
(without having to load a monster image)
http://www.brendemuehl.net/images/IMG16533if.jpg
where you can see the vertical band.
So I spent some time @ WorldOfUsedPhotography (a new, local
used equipment shop) with one who knows DSLR tech inside and out.
I was told that none of the cameras are immune to this type of interference.
He has seen this before. It's just the nature of the technology.
While his experience showed it to be the fluorescent lights in work areas,
I also wonder if it might be things like milling equipment and other
machines that generate a good quantity of hash.
It *only* happened when I am in the work area,
and *always* happened when I shoot out there.
It is in the identical position on each image shot in that location.
It is a question of electrical interference with the sensor.
Sincerely,
Collin Brendemuehl
"He is no fool who gives what he cannot keep to gain what he cannot lose"
-- Jim Elliott
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