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View Full Version : Canon 20D has spots on the picture..

jimchapin468
14th of July 2005 (Thu), 17:21
Looks like when I take a picture of the sky I see 2 or 3 spots on picture when I look at it. I have attached a photo. What is is? 100% crop -- What do I do? Jimmy

How do you clean the CMOS if that is it?
lkorell
14th of July 2005 (Thu), 17:28
Most likely dust on your sensor. You need to clean it. If you are nervous about doing that yourself take it in to a good camera shop and have them show you how. The reason I said have them show you is that you don't want to have to take it somewhere to get it done every time you need it.

Lou
Joe R
14th of July 2005 (Thu), 17:36
Yep. Looks like dust. Lots of sensor cleaning info out there. Here's a good place to start:

http://www.cleaningdigitalcameras.com/
Medic1
15th of July 2005 (Fri), 12:40
Thats dust all right....20D is notorious for having dust straight from the factory. I just formated my computer or else I would post a pic of my 1st 20D and how the image looked right out of the box (looked like a sandbox). Luckily my local shop exchanged it for me, and while the second one still had dust spots, it was an amount I could live with. I just gave it a quick blow out with a hurricane blower bulb and its been good ever since......
ddelallata
15th of July 2005 (Fri), 12:41
This works for me everytime..
http://www.pbase.com/copperhill/ccd_cleaning
skyphix
15th of July 2005 (Fri), 13:51
Not exactly the best place for me to take these photos against, but it shows what Im trying to show.

Before cleaning
http://non.skyphix.com/2005/Things/Small/BeforeCleaning.jpg

During Cleaning
http://non.skyphix.com/2005/Things/Small/DuringCleaning.jpg

After cleaning
http://non.skyphix.com/2005/Things/Small/AfterCleaning.jpg

All I used was the blower from an ear cleaning kit (hey! I have an ear infection :( ) Its probably not perfect, but close enough for me, and I RARELY shoot at F16 or higher.
Mitcon
15th of July 2005 (Fri), 16:14
You get used to the cleaning quite quickly, I have to clean mine 2-3 times in one day sometimes. I must say it's not always that bad as sometimes it goes weeks without needing it. It really depends on how dusty the area your shooting is and/or how often you change lenses. If it's the lens itself thats dirty always use a blower first, last thing you need is a scratch while cleaning it.