Canon 450D - Error 99 only when flash pops up

SOURCE: Canon 450D, ERROR 99 only when flash pops up

Err 99 usually means your lens contacts are dirty either on the lens itself or on the camera.

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.

SOURCE: I have a canon Rebel xsi eos I don't know how to use the control

That's what the owner's manual is for.

SOURCE: CANON EOS REBEL XSI 450D BODY WHEN TAKING A

Unfortunately, the Error 99 code is a catch-all code that means an UNKNOWN error has occurred. Because of this, it is difficult to pin down exactly what is causing the problem.

It could be a fault with either the camera (main circuit board, software, shutter mechanism etc.) or even the lens.

For starters, I would make sure that the lens electrical contacts are clean and the lens is mounted correctly and fully locked home. If you have a spare lens, try that also.

Next, I would reformat the memory card (do this in camera). If you have a spare memory card, try that also.

Check that the battery contacts are clean, and also the contacts of any external hardware such as vertical grips.

If none of these solve the problem, the only option left is to take it to a Canon service agent :-(

Hope this helps,

Matt

SOURCE: How do u turen auto

Is it normal to adjust the sharpness when downloading my pics. to picassa from my rebel xsi