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05/07/2005 02:00:20 AM · #1

I noticed tonight shooting my Triangle challenge that if I left the shutter open for 30 seconds that there would be a noticable white spot. Is this a cluster of hot pixels??? Is it something to be concerned about? Should I call Canon???

If I let the camera cool down between shots does it make a difference?

Kind of disappointing. If I want to take bulb shots I am greatly hindered. Any words of encouragement?

05/07/2005 02:20:17 AM · #2
Did you cover the eye piece while shooting?
05/07/2005 02:21:45 AM · #3


I did not cover the eye piece. Could that be the cause?

05/07/2005 06:05:26 AM · #4
Does the 350D have noise reduction in the custom functions?
05/07/2005 07:39:43 AM · #5
It is possible that light could get in through the eyepiece. You should always cover it when taking a shot - especially a long one.

You might also try taking a shot with the lens cap on to see if there are any white spots in that shot as well. If there are, then you do probably have a sensor problem and should have your camera repaired. If not, then it was probably some light in the shot or a dust spot or something. Good luck!

Message edited by author 2005-05-07 07:52:29.
05/07/2005 07:46:20 AM · #6
Originally posted by RickH:

I noticed tonight shooting my Triangle challenge that if I left the shutter open for 30 seconds that there would be a noticable white spot. Is this a cluster of hot pixels??? Is it something to be concerned about? Should I call Canon???

If I let the camera cool down between shots does it make a difference?

Kind of disappointing. If I want to take bulb shots I am greatly hindered. Any words of encouragement?


Can you post a sample?
05/07/2005 07:51:47 AM · #7
no, they meant cover the eyepeice, you can get light from the eyepeice in some circumstances

Originally posted by PhilipDyer:

I think what whagerbaumer meant was that you should try taking a shot with the lens cap on to see if there are any white spots in that shot as well. If there are, then you do probably have a sensor problem and should have your camera repaired. If not, then it was probably some light in the shot or a dust spot or something. Good luck!
05/07/2005 07:54:12 AM · #8
Right, I just spotted my error and edited my original post. Thanks for pointing that out, Di. :-)
05/07/2005 07:59:59 AM · #9
you're welcome

Originally posted by PhilipDyer:

Right, I just spotted my error and edited my original post. Thanks for pointing that out, Di. :-)
05/07/2005 08:42:47 AM · #10


I just took 4 shots in a row at 30 seconds with the lens cap on and covering the eyepiece and there was no white spot. There was a lot of light in the area I was standing to take the picture so it looks like your theory is correct. However, how would you cover the eyepiece without shaking the camera?

05/07/2005 08:47:55 AM · #11
on your strap there is an eye piece cover. you remove the one from the camera carefully and then cover the back with the piece attached to your strap. Its actually in the owners manual on page 50 at the top.

Message edited by author 2005-05-07 08:52:53.
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