Question about Canon EOS-20D Digital Camera with 17-85mm Lens

1 Answer

Not being able to shoot

Some 2 weeks ago as I tried to shoot with my EOS-20D w/ Canon's EF-S 17-85mm lens, it didn't "wanted" to shoot. I imagined being a focusing issue, so I switched to Manual Focus, took a picture and then back to Auto Focus. It worked well. But now the same problem appeared, which means that although the camera can get the subject focused (and the focus light gets solid, not flashing), it simply doesn't shoot. I already tried switching lenses and the problem remains the same. Battery fully charged and firmware is the latest version (2.0.3). Any ideas of what can be done in order to get it working? I'd appreciate!!

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  • benxt Jan 27, 2008

    thanks, but none of this is the case. don't have the battery grip, cf card is well fit... anyone else has some clue?
    I must mention that I also re-formatted the cf card from the camera. It didn't help either.



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read sum of these links

My change was that, I inverted the cammera so the dust fell out after blowing

Posted on Jan 27, 2008

  • 3 more comments 
  • nick helpap
    nick helpap Jan 27, 2008

    also what kinda sd card do uuse ?

  • nick helpap
    nick helpap Jan 27, 2008

    The 20D camera as originally sold had occasional lock-up problems (became unresponseive to user input) often right after changes lenses and/or flash cards. Removing the battery and re-inserting it restored the camera. Canon's 20D firmware update 1.0.5 fixed the lens-communication and CF-card communication problems in most cases, though some people still report lockups. Firmware 1.1.0 added a fix for horizontal banding at high ISO settings when using the built-in flash. There is a link for firmware downloads below under "Canon Links".
    Note: if you are using the BG-E3 accessory battery grip with a heavy lens, the grip can pull away from the camera body enough to release the microswitch by the battery door that locks out CF memory access. This could cause any number of problems if it happens while writing to the CF card. This can be fixed by using a folded-over business card, adhesive velcro pad, or the like on the far edge of the grip, to the outside of the locator-pin near the attachment thumbscrew. In this way the grip is "pre-loaded" against the camera body when it is screwed on, and no reasonable amount of force will open the microswitch. The same thing can happen with the CF access door if it is pushed slightly open by your right hand palm (less than 1 mm does it). One solution here is to cover over the door with another surface. Black gaffer tape is one possible, if crude option.

    Holding the MENU button down for 8 seconds continuously will hard-reset the camera, restoring all factory default settings

  • nick helpap
    nick helpap Jan 27, 2008

    Canon Links
    Canon 20D page link to register your 20D, specs, and brochures
    Canon user manuals 20D user and software manuals online in PDF format
    Canon downloads download new firmware, drivers, software, SDK
    Canon 20D tech report Some details regarding the new design features found in the 20D.
    CMOS sensors a brief description of Canon's CMOS sensor technology
    Tech Report mostly for 1D-II, 1Ds-II cameras, but with useful general info and tips

  • nick helpap
    nick helpap Jan 27, 2008

    ill keep serching for sol

  • nick helpap
    nick helpap Jan 27, 2008

    ill keep serching for sol



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Canon eos 20d error 99

1.Remove the battery, lens and CF card. Allow the camera to sit without power for 20 minutes and then reinsert a fully charged battery.
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Error 99

Trouble shooting Error 99

1. Solution: Remove and replace the battery.

Power the camera off
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  3. Replace the battery.
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2. Clean the lens contacts.

Clean the lens contects on the rear portion of the lens with a clean pencil eraser.
  • Mount the lens on the camera.
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If the error persists, the camera and/or lens may need be serviced by a qualified Canon Service Technician.

3. Remove the 3rd party accessory.
Please remove the 3rd party accessory and replace it with genuine Canon Accessory.

4. Solution: Remove third party lens and try with Canon EF or EF-S lens.
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