Question about Canon Rebel XT / EOS 350D Digital Camera

8 Answers

Why do I get Error 99 in my Canon EOS 350 D?

I have been experiencing sporatic error 99 messages for the past 1 week with my kit lens and my Canon EF-S, 18-55 mm, 1:3.5 - 5.6 II. This original Lens was bought along with the Camera. I have taken just over 10,000 exposures with my camera in 16 months. If I change the lens, the camera works fine. I have done this, but still the error continues : 1. Carefully clean the 8 gold color lens contact pins on the camera body lens mount with a pencil eraser. Do this while holding the camera so that any eraser dust will not fall into the camera. 2. Take out both batteries. Also remove the CF memory card. 3. With the batteries removed, turn the camera switch on for 3-5 minutes. He said that this clears the memory. 4. Turn the camera off and put the batteries and CF card back in. 5. Re-attach the lens and turn it back on.

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  • Anonymous Nov 21, 2007

    when i take any shot by camira show these word (error 99)

  • Anonymous Nov 25, 2007

    Hi I am Anand,

    I a professional photographer I had the error 99 problem in my Canon EOS 350D with sigma lens 17-35mm while shooting a landscape picture which was very important to me and suddenly i had this problem and i did not know what do. I shut down may camera and after few hours i switched on the camera it was working fine Should i give may camera for service? and get it checked.

  • Anonymous Jun 10, 2008

    My camera has the same problem. How I fix that?

  • Anonymous Aug 25, 2008

    i was taking pics from my EOS 350 D then all of suden this mesage appears on the screen camra stoped working plz help me out

  • Anonymous Oct 13, 2008

    hi i have this problem! what can i do about it?

  • suckygrrr Oct 15, 2008

    I have the same problem, but I JUST got my camera. So there should be nothing wrong with it. However, when I look in the CF card holder, one of the copper things is going through the middle a bit, I dont think its supposed to be like that, is it?

  • Anonymous Nov 01, 2008

    I have a Canon XT
    sometimes appears Error 99 I turn it off and on, and keep shooting.
    I would like to repair it, and know what is it ?


  • chr1stoph3r Nov 17, 2008

    auto focus not focusing and when using manual focus err 99 comes up . I have tried the solution for err 99 but dosn't solve it .



    Thanks chris

  • Anonymous Dec 04, 2008

    My camera also shows error messages when wanting to take a picture and when the message appears, it doesn't take the picture.

    It acts like it takes the picture, but the picture is not there

    But I will take this tip and clean the lens.

  • rickhugh Dec 14, 2008

    Is a error 99 a shutter problem or lens contact problem?

  • rwbrooks60 Dec 23, 2008

    I have same problem and tried this soluntion but still getting error 99 and camera will not take photo. Camera is only a few months old so should not be having this problem.

  • Anonymous Mar 26, 2009

    ERR 99


  • Anonymous Mar 26, 2009

    CANON EOS 350D                                                                                    ERR 99       


  • Corrado Baldini
    Corrado Baldini Mar 29, 2015

    Canon 330D EFS 18-55 + TAMRON 55-200 -both lenses got error 99. Just followed procedure above suggested and fixed brilliantly the issue! Thanx so much indeed. Corrado (Milan Italy)

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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 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 it does, then the camera should be
serviced. If it does not, then please proceed to the next set of steps:
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 the most
likely source of the issue. Try using a different card.
If the message does not appear, please complete the following steps:
1. Turn off the camera.
2. Clean the lens contacts by gently rubbing them with a pencil eraser
or soft cloth. Be 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 should be serviced.

Posted on Jan 30, 2009

  • 2 more comments 
  • karmen_ioana
    karmen_ioana Feb 25, 2013

    Jarrett, I tried doing this. After the first step which goes well(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 a fully charged battery, and turn on the camera. 5. Depress the shutter button as you would to take a picture.) when I turn it on after inserting the cf, it says again error CF, whithout even trying to format it or anything. Should I try format it using a card reader or replace the cf?I mention that is the same cf I bought it with so there can't be any compatibility issue.Thanks!

  • karmen_ioana
    karmen_ioana Feb 25, 2013

    Jarrett, I followed the steps you said. But after the first one(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 a fully charged battery, and turn on the camera. 5. Depress the shutter button as you would to take a picture.) when I turn on the camera after I put in the cf, it says on the display error cf, so I can't go on with formatting or anything else. I mention is the same card I used before with no problems, so there's not a compatibility issue. Should I format the card with a card reader or should I just replace it? It's the card my problem or the camera?Thanks!

  • Corrado Baldini
    Corrado Baldini Mar 29, 2015

    Canon 330D EFS 18-55 + TAMRON 55-200 -both lenses got error 99. Just followed procedure above suggested and fixed brilliantly the issue! Thanx so much indeed Jarrett. Corrado (Milan Italy)

  • Corrado Baldini
    Corrado Baldini Mar 29, 2015

    I am sorry: Canon 300D not 330D

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I am desperate; I am at Normandy (France) to see the D-Day sites...something I've waited to do for 40 years. Accidentally, my Canon 350D fell on the ground; I picked it up and it worked fine as I took dozens of picture in Paris...but now that I'm here, absolutely nothing will turn on, even though it downloaded picture to my laptop just this morning. Please help; what can I do?

FYI, after the accident, the Error 99 message came on...but then went away; is there a link here?

Posted on May 03, 2008

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Solution #6 is what exactly Canon emailed me few minutes ago and is not the solution, in my case.. I still get err 99.Maybe a different memory brand. Never buy Canon. The "International Warranty" is not really international....just for the USA and maybe Canada.

Posted on Aug 13, 2009

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In my case, when using an old EF 35-80 lens, using manual focus completely cured the problem. Therefore my deduction is that The EOS350D has not sufficient power to drive the focusing motor of a lens where the friction has increased a bit, whatever the reason (dirt, dried grease in lens mechanism, wear, etc... 

Posted on Oct 29, 2009

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In my situation -EOS 350D with stock 18-55 lens- it ONLY happens while towards the wide angle limit -around focal 18mm- If I zoom past 24mm right on the dot mark next to the 24mm, it NEVER happens. So I make sure that I am a bit past 24mm with the focal and I shoot with no problem whatsoever.

Posted on Nov 26, 2012

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According to question, it should be related with power diaphragm unit in side of lens. For more specific the canon bundle lens product has manufacture defective. The wrong design and material causes braking itself of control flexible printed circuitry attached with power diaphragm. And the err 99 code shows up. But canon wont say it is wrong designing. Repairing the problem is not that expensive fortunately. It usually cost around $35 to $85 on the repair market. It is delicate job so I won't recommend doing user by oneself unless the owner is very skillful to repair in electronic and mechanic! Of course if you think no matter with destroying the lens at the end.
Hope You Luck! A Professional Camera Clinic Guy!

Posted on Apr 02, 2015

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The aperture diaphragm of the Kit-Lens may be "damaged" by unkown reason(s), such that it cannot stop down. Prove it when you try the depth-of-field button several times, the stopping-down action may fail sometime. Therefore, I have to bought another second-handed one to solve this problem!

Posted on Aug 24, 2007

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Posted on Apr 06, 2014

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Try the following diagnosis steps, in this exact order. This will isolate the cause of the issue: -
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.

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