I am shooting with 1d classics and I get these white specs in my photos.
Now I have not taken the time to see if both bodies are producing this or just one, and it is only at high iso.
These specs are much more pronounced than your average noise, in fact I am using the trial version of neat image for noise removal and the specs tend to remain.
And in files that where taken in a series the specs are pretty much in the same place.
Soooooo, if I had to guess I would guess dead pixels.
Nothing cloning does not cure, but it gets tedious if I have a hundred or more files from a shoot.
Try this - do a sensor clean but leave a lens on, with lens cap (or use a body cap). Leave the sensor 'open' for a minute or two. You may then find that the dead pixels are gone.
Lord Fluff wrote:
Try this - do a sensor clean but leave a lens on, with lens cap (or use a body cap). Leave the sensor 'open' for a minute or two. You may then find that the dead pixels are gone.
Thanks Lord Fluff, I will try this,
Just out of curiosity, how does this technique accomplish dead pixel removal?
Assuming that dead pixels show up a white (there seems to be some disagreement about that), wouldn't you be able to see them clearly by shooting something black? I would think they would stick out rather prominently.
I have a seen white specs on some of my shots. I was not sure whether to attribute them to some sort of sensor defect (dead pixel or dust) or some artifact from the jpeg conversion (or maybe from my noise reduction software). After inspecting a few before and afters, I'm now thinking its Neat Image that is doing it.
If you process the raws through adobe ACR it maps them out.
DPP unfortunately doesn't.
Oh, btw I have a 1D also that has 2-3 dead pixels.
I tried the sensor clean thing with a body cap on to no avail. Maybe I didn't do a long enough exposure.
