As expected in anticipation of the new 580EX flash unit, Canon has posted a firmware update for the 1D Mark II. According to the Canon site this update:
Quote:
This firmware update fixes/improves the following:- Added new functions for communicating with the Speedlite 580EX.
- A color temperature information transmission function has been added to stabilize the white balance.
- Reduced noise when shooting bulb exposures.
- Reduced the noise when shooting bulb exposures (astronomical shots, etc.).
- Fixed sensor-cleaning operations.
- Fixed the problem of the shutter not opening if sensor cleaning was performed immediately after taking bulb exposures.
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You can download the update from
this Canon support page.