Question about Canon EOS 30D Body Only Digital Camera

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Canon EOS30D: Overexposure in Auto Mode

My EOS30D appears to over exposure shots by about two stops when in the green box 'idiot' mode. At first I thought this was a result of unusual light conditions in a coastal location, but it is also doing it in 'unambiguous' locations too which should not poase a problem. Paradoxically, when shooting landscapes I've found the best of the 'simple' exposure modes is Portrait. Has my camera got a fault?

I've also been getting ERR99 messages too, even though both of my batteries are fully topped up 9I tried swapping the batteries round).

Recently took it to Cuba with me, where as a result of both problems above, I felt the camera had let me down. Advice urgently needed! Or should I just trade it in for a Panosonic 'bridge' camera.

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  • Anonymous Mar 04, 2009

    i have the same problem.

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To isolate the cause of the issue, do the following: -

1. Turn off the camera.
2. Remove the lens, battery, and CF card.
3. Allow the camera to sit without power for approximately 20 minutes.
4. Insert only a fully charged battery, and turn on the camera.
5. Depress the shutter button as you would to take a picture.


Does the “ERR 99′ message appear? If so, the camera may be faulty and requires a service. If it does not, then: -

1. Turn off the camera.
2. Insert the CF card.
3. Turn on the camera.
4. Format the CF card in the camera.
5. Depress the shutter button as you would to take a picture.


Does the “ERR 99′ message appear? If so, then the CF card is faulty. Try a different card. If the message does not appear: -

1. Turn off the camera.
2. Clean the gold contacts on the lens by GENTLY rubbing them with a pencil eraser or soft cloth. Keeping the camera face pointing down, also clean the gold contacts on the camera, being careful that you do not let any debris fall into the camera body.
3. Reattach your lens.
4. Turn on the camera.
5. Depress the shutter button as you would to take a picture.
If the “ERR 99′ message only appears when one particular lens is attached, then that lens should be examined by a service technician.
If you see the “ERR 99′ with a different Canon lens attached, then the camera is faulty and should be serviced.

Posted on Mar 19, 2009

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