Re: How to check for dust on the sensor
- From: "Adrian Boliston" <adrian@xxxxxxxxxxxxxx>
- Date: Fri, 23 Mar 2007 21:50:48 -0000
"Bruce" <brucel7@xxxxxxx> wrote in message
news:y6uMh.5400$ia7.4226@xxxxxxxxxxxxxxx
What is a good way to check for dust on the sensor of my digital camera?
I have tried taking an unfocussed picture of a white sheet of paper,
however I do not see any dust when I look at the image. Now that of
course may be a good thing but I've had this camera for about a year now
and I frequently change lenses. Should I expect to see some dust on it?
It's a Nikon D2X so doesn't have any automatic dust removal feature.
I set f22 iso200 and point it at my PC screen while it's white (eg run
notepad.exe and maximise it to get a nice white screen). It will usually
expose for about 4 seconds so I move the camera about to try and blur any
reflections.
Another trick which really shows up the filthy dust is to open up the Nef
and select auto levels (i do this in capture nx but I think cs2 has a
similar feature), but this is a bit overkill as it will show up dust which
you will not even see in a normal sky shot at f22. I mainly shoot at f8 or
below so I'm not too worried. I recently had a go at cleaning some dust
with some eclipse fluid on some sensor swabs (plus a couple of blasts from
the giotto) which got rid of some larger specs, but after using the auto
levels trick I could still see quite a few smaller specs, but they certainly
don't show in any normal pictures so I try not to worry too much.
cheers adrian www.boliston.co.uk
.
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- How to check for dust on the sensor
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- How to check for dust on the sensor
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