Question about Canon Rebel XT / EOS 350D Digital Camera

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ERROR 99 i have canon eos 350d camera with efs18-55 lens. earlier when i click the photograph it shows error 99 on the screen and picture is not clicked. then i turn the camera off and again turn it on then picture is clicked. but now when i see through the view finder the subject looks totally darker.

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Htgsht,
the storeman's solution is one way to attack this type of problem. his knowledge about the error code 99 is absolutely correct. if this does not work, you may want to try this one.

i did had the same problem with my XTi and was able to resolve this. normally if you have this strange behavior with the lense diaphragm, then chances are there is a problem with the lens.

1st troubleshooting steps:
1. If you happen to have another lens, an EF or similar EFS lens, you may want to try changing first the lens.
2. If the camera works just fine, then the lens would definitely be the one causing the error message.

with the observations you have made upon viewing the view finder (image becomes darker), this can be suspected as a malfunction on the lens diaphragm.
i took my unit to the CANON service facility and was quoted for 145US$. according to them the lens can be repaired by replacing the parts inside the barrel. when i asked for the costly reason behind they said, parts that can be ordered from Japan comes in one assembly only (that means, everything inside the lens except for the barrel or the outer body of the lens)...cool.

2nd troubleshooting steps:
1. to check if this is indeed a lens diaphragm problem, set your camera function to either Av or manual.
2. Adjust your aperture value to the largest number...say f22.
3. set the camera to the lowest focal length.
4. with the camera facing you (so you can see the lens diaphragm blades move), do a half press on the shutter followed by a press at the depth of field preview button (below the lens mount portion of the camera body). try doing this at both wide and zoom mode of your lens. you should be able to observe the diaphragm blades open and close as you press and release the depth of field preview button.
normally, with the given condition of your lens (darkening of the image viewed from the view finder), the diaphragm blades will not function on either one of the zooming range of the lens.

this problem actually is an internal problem on the lens whereby the flexible connector that connects the diaphragm contacts to the electronic circuit board is already worn (broken).

i took my lens to a non authorized canon service and the repalcement cost for the flexible connector was about 20US$. it is normally cheaper to take this case to a non authorized canon service facility in your area since the problem is just a simple flex connector replacement and is often cheaper than taking it to the canon authoized service center.

hope this one helps!

Posted on Mar 05, 2009

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Error 99 is a generic error in that the camera does not know what the exact error is. The usual fix for this error is ......

Turn the camera off and remove the battery.

Remove the lens and clean the electrical contacts on the rear of the lens with a soft dry cloth.

Refit the lens and the battery and switch back on. Hopefully all will be well again.

Posted on Jul 09, 2008

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Error 99 appears when I use the canon EOS 350D


I think I answered this earlier did you ask this question more tan once?

well here you are a simple fix from experience.

The guy at Canon tech support listened to my woes and then told me that the lens contacts were dirty and to get a pencil with an eraser on the end, just a regular old pencil with a red rubber eraser. Detach the lens from the camera, hold it so that the lens’ gold contacts are pointing down and lightly erase their exposed surface, cleaning them of any hand oil that might have gotten on them. Do the same thing with the gold contacts inside the camera body. This is a bit harder but it’s doable: just hold camera so lens opening points down so no gunk falls in. Erase lightly. I used a lens cloth and dabbed at the contacts rather than blow them so as not to blow the erasings inside the camera.
I did this to each of my three lenses just to be sure. Lo and behold, it worked (so far anyway). I’ve shot numerous pictures with each lens and have not gotten a single error 99 message.

Please rate this help to keep the service online

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1 Answer

I have a Canon 350d camera EF18 - 55mm Lence ,


this is what the canon people say to do for error 99


Read this!!!


The guy at tech support listened and then told me that the lens contacts were dirty and to get a pencil with an eraser on the end, just a regular old pencil with a red rubber eraser. Detach the lens from the camera, hold it so that the lens’ gold contacts are pointing down and lightly erase their exposed surface, cleaning them of any hand oil that might have gotten on them.

Do the same thing with the gold contacts inside the camera body. This is a bit harder but it’s doable: just hold camera so lens opening points down so no gunk falls in. Erase lightly. I used a lens cloth and dabbed at the contacts rather than blow them so as not to blow the erasings inside the camera.

I did this to each of my three lenses just to be sure. Lo and behold, it worked good luck have a nice day!!! :) :) :)

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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.
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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.

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1) Turn the camera off. Remove the memory card. Remove the lens. Replace the lens. Turn the camera on. Replace the memory card.

2) If that doesn't fix the problem, try cleaning the contacts on the lens and camera. Turn the camera off and remove the lens. Hold the lens upside down (contacts down) and gently rub the contacts with a clean pencil eraser. Be very careful to ensure that the eraser debris falls on the table and not into the lens. Repeat with the camera body, also holding it upside down (contacts down) as you clean. Replace the lens.

If neither of these work, then you need to send the camera in to Canon for repair.

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