This firmware update (Version 1.2.3) incorporates the following improvements.
Includes the following new features that were frequently requested by customers to the new firmware.
Direct selection of AF points by the Multi-controller is added to C.Fn III-9.
Alternate access to Exposure compensation is added to C.Fn IV-3.
With the camera’s External Speedlite control menu, Flash function settings can be used to set the Wireless setting and Zoom.
Improves the stability of AF accuracy in AI servo AF when shooting extremely low-contrast subjects.
The Version 1.2.3 firmware being released this time is for cameras with firmware up to Version 1.1.3. If the camera's firmware is already Version 1.2.3, it is not necessary to update the firmware.
Canon EOS 1D Mark III
What has been changed in version 1.2.3 of the firmware?
The following improvements have been incorporated.
1. Includes the following new features that were frequently requested by customers to the new firmware.
Direct selection of AF points by the Multi-controller is added to C.Fn III-9.
Settings 3, 4, and 5 of C.Fn III-9 allow the user to select AF points directly with the M ulti-controller instead of the Quick Control Dial or Main Dial.
In setting 3, you can select from all 19 points with the Multi-controller.
In setting 4, your selection is limited to the 9 inner points with the Multi-controller.
In setting 5, your selection is limited to the 9 outer points with the Multi-controller.
Alternate access to Exposure compensation is added to C.Fn IV-3.
Settings 3 and 4 of C.Fn IV-3 allow the user to control Exposure compensation when using the Quick Control Dial to control AF Point Selection or ISO Speed selection.
In setting 3, AF point selection is controlled by the Quick Control Dial while metering is active. Additionally, the functions of the Exposure compensation/Aperture button and AF Point selection button are reversed, allowing easy access to Exposure compensation through the Quick Control Dial.
In setting 4, ISO speed selection is controlled by the Quick Control Dial while metering is active. Additionally, the functions of the Exposure compensation/Aperture button and ISO speed set buttons are reversed, allowing easy access to Exposure compensation it while holding the camera.
With the camera’s External Speedlite control menu, Flash function settings can be used to set the Wireless setting and Zoom. *
*This is only for EOS-1D Mark III as it is already incorporated in EOS-1Ds Mark III from the initial mass production.
For details, please see the explanations on the new features (PDF file) that can be downloaded from the bottom of this page.
2. Improves the stability of AF accuracy in AI servo AF when shooting extremely low-contrast subjects continuously.
