Question about Canon EOS 40D Digital Camera

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I can not take picture using 100mm micro lense with eos 40d

When i take picture using 100mm micro lense with eos 40d one message appear on my camera sreen
communication between camera and lense is faulty clean the lense contact.due to this message i cant take another picture please suggest solution.

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  • Anonymous May 09, 2009

    I have the same problem AND I have cleaned the contacts, tried other lenses and upgraded the firmware etc. What next? I challenge the 'experts' of this forum to provide helpful suggestions.

    I'm really aggravated by the so called 'wiz' on this site suggesting the obvious! If you're a wiz, I expect more than is displayed on my camera screen.

    Otherwise, it seems you post replies just to increase your rating...

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  • 115 Answers

??? try to clean the lense contacts!!

Posted on Feb 04, 2009

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Having received no response in over a month, I assume this is no longer a problem.

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Your flex cable to the Iris is broken. Have a look at my gallery at http://www.pbase.com/barry_2718/efs1785mm I have the same symptoms. At 28 or 35mm it make work ok. try Av mode and f8 aperture to see if you get an err01 because the aperture does not move either.

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Try taking the battery out and putting it back in. If that doesn't work try cleaning the len's contact sesnors with a pencil eraser.

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It most likely was a short in the repaired lens that caused the sensor to go bad over time.

I have been shooting with Canon cameras and lenses for many years and I do not always turn off power before switching lenses. It is not a big deal.

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Try the following diagnosis steps: -

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.

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Sounds like a software issue, try to upgrade or reload the firmware.

I hope it helps :)

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By the way are these RAW images? What type of lense are you actually using, check this

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