III include several customer-requested features, and improves autofocusing accuracy on both models.
Firmware changes in both cases are almost identical:
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.
- ettings 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.
- In setting 3, you can select from all 19 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.
- 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.
2. Improves the stability of AF accuracy in AI servo AF when shooting extremely low-contrast subjects continuously.
