Go Back   Steve's Digicams Forums > Digital SLR and Interchangeable Lens Cameras > Canon EOS dSLR

Reply
 
Thread Tools Search this Thread
Old Feb 14, 2005, 11:07 AM   #1
Junior Member
 
Join Date: Nov 2004
Posts: 2
Default

I bought a 20D, and did a dust test at f/22 when I first got it. It revealed 3 matchstick-head sized black spots on my images at 100% magnification. I suspected that the dust was trapped between the sensor and glass because they were very dark and sharp, and sent it back to Canon. Canon CPS seemed to agree and replaced the sensor.

But when I got my camera back the replacement sensor had the same problem (but in different places) so I had to send it back again. I've sent it back three times now ... :-(

Has anyone else seen this problem? I have complained to Canon that I cannot be sending my camera for repair indefinitely (I'd like to be able to use it at some point) but they tell me that's the only thing I can do.
gfwk2 is offline   Reply With Quote
Sponsored Links
Old Feb 14, 2005, 11:22 AM   #2
Senior Member
 
Join Date: Jul 2003
Posts: 3,396
Default

Yikes, dirt inside the sensor, andrepair not checking it out before sending it back, that would be real annoying.

I had sawdust in/on my 20d sensor (Real Stupid User Move) but itwas easily removed with a Visible Dust Sensor brush.

Peter.
PeterP is offline   Reply With Quote
Old Feb 18, 2005, 4:33 PM   #3
Junior Member
 
Join Date: Nov 2004
Posts: 2
Default

Just heard from Canon (in the UK BTW). They say ALL 20D sensors have this trapped dust problem, and claim that it is even worse in the 1D/1Ds. Also, they say that they check by taking a photo of a bright background at f/8 or so and put it through a computer program which counts the number of spots. If it returns an 'acceptable' value, Canon deems the problem to be fixed. They don't actually eyeball the picture themselves.

Dust which I can clean myself is not a big deal, dust spots which I can NEVER get rid of is more annoying. Furthermore, they claim that 'professional' photographers live with the problem and clone out the spots. So they are very reluctant to do anything about it any more - their advice is live with it! Hmmmm ...
gfwk2 is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 9:43 PM.