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EOS-1Ds Mark III

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EOS-1Ds Mark III

EOS-1Ds Mark III

FAQ ID: L00000039
Release date: 08-Jul-09

FAQ: Announcement regarding abnormal mirror operation (Err 99) in EOS-1D Mark III and EOS-1Ds Mark III cameras


We have discovered that abnormal mirror operation occurs in some EOS-1D Mark III and EOS-1Ds Mark III digital SLR cameras.

The mirror does not operate even if the shutter button is pressed, and the following message "Err 99 Shooting is not possible. Turn the power switch to <OFF> and <ON> again or re-install the battery" appears frequently on the camera’s LCD monitor.


Free repairs will be provided to affected products. To have your product repaired, please contact one of our authorized service facilities. They will provide you all details regarding shipment and repair procedure.

Firmware Update
Firmware that further specifies error indications based on the details of detected errors is now available.  The error indications are specified based on the causes of errors so that adequate support can be provided to customers.

For details about the specified error indications and procedures to download the firmware, please go to the following Web sites:

We offer our sincerest apologies to customers using these products who have been inconvenienced by this issue. Canon always strives to provide the highest quality products to our customers, and we spare no effort in our quality management to make sure our customers can use our products with confidence. We hope our efforts will earn your understanding.

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