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Firmware update for EOS 1D Mark IV

Firmware Version 1.1.1 for the EOS 1D Mark IV incorporates the following change.
• Optimizes the camera's exposure accuracy when using EF 24mm f/2.8 IS USM and EF 28mm f/2.8 IS USM lenses, which are scheduled for release in June 2012. If these lenses are used with an EOS-1D Mark IV camera that has not been updated with the new firmware, the image may be overexposed depending on the subject and shooting scene.

The firmware upgrade can be installed by the user. Full instructions and downloads are available at the
>>Canon Download Centre


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