It has always been a problem on long exposures with all digital
cameras. That is why most cameras have a long exposure mode. Two
images are taken during long exposure mode, one with the shutter
closed, and the hot pixels are subtracted from your image. Hot
components near the sensor will also show up as a kind of heat flare
on long exposures if the camera is not carefully designed. Long
exposure mode will get that too. If you look at the old reviews on
dpreview compared to newer ones you will see that it has gotten much
better though, not worse.
Winsor
Long Beach, California, USA
On Jul 27, 2006, at 8:30 AM, ALI wrote:
>
> Are hot pixels a common thing in DSlr's? I have not done too many long
> exposures, however the ones I have done - I did not notice anything
> out of the
> ordinary.
>
> I have been seeing more and more posts about pixels being out of
> whack. The
> statement below is an example:
>
> "I was doing some long term exposures last night and got a bunch of
> red
> and blue pixels scattered around the picture. They were in the exact
> same places in each picture. Just FYI it was a ten second exposure @
> f/22 and ISO 400."
>
> Thanks.
>
> - Ali
>
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