How to detect dust on CCD sensors?

Hoky · 19th October 2005

Just want to know the various methods DSLR users employ to detect dust on their CCD sensors.

majere2sg · 19th October 2005

Originally Posted by Hoky

Just want to know the various methods DSLR users employ to detect dust on their CCD sensors.

Just say sensors.. Canon uses CMOS sensors..

Set to small aperture (F16 or more), then point a white area or the sky and take some pictures, You should see consistant spots on the same area.
Anyway if the spots are not shown on ur pics, why bother ?

DEADMETAL · 19th October 2005

Originally Posted by majere2sg

Just say sensors.. Canon uses CMOS sensors..
Set to small aperture (F16 or more), then point a white area or the sky and take some pictures, You should see consistant spots on the same area.
Anyway if the spots are not shown on ur pics, why bother ?

Guess you have repeat this alot of times lol.

I've an experience that when I shoot at certain focal length, the dust appear, and certain focal length dust don't appear. Anyone have this experience?

Canew · 19th October 2005

Different focal length? I notice can see the presence or not when I can the aperture value. (step down, can see better) That is my experience.

19th October 2005	#1
Hoky Member Join Date: Mar 2004 Location: Singapore Posts: 1,186	How to detect dust on CCD sensors? Just want to know the various methods DSLR users employ to detect dust on their CCD sensors.

19th October 2005	#4
Canew Senior Member Join Date: Jul 2005 Location: Tampines Posts: 2,091	Re: How to detect dust on CCD sensors? Different focal length? I notice can see the presence or not when I can the aperture value. (step down, can see better) That is my experience. Last edited by Canew; 19th October 2005 at 11:29 AM.