After a number of internet rumblings and with Nikon already offering the capability with the Nikon D4, the AF capability of the EOS-1 D X has been expanded to include lens combinations with an effective maximum aperture of f/8. Previously, it was limited to f/5.6 presumably due to accuracy concerns. The new capability is especially good news for those using the 600mm f/4 with Canon 2x converters (such as the current Extender EF 2.0x III) , before the announcement of the new firmware (v1.1.1) the 600mm f/4 could only be used with the 1.4x converter. Now all that's needed is another update to alllow the use of the 800mm f/5.6 with the 2x converter (they have an effective maximum aperture of f/11).
Performance redefined - Canon enables auto focus at f/8 for the EOS-1D X with new Firmware 1.1.1
United Kingdom, Republic Of Ireland, 18th October 2012 - Canon today announces a new firmware update for its acclaimed EOS-1D X professional digital SLR is now available, offering new functionality and improved performance to professional photographers. Developed in response to direct feedback from photographers around the world, Firmware v1.1.1 improves the scope and performance of the AF function and introduces minor fixes to offer professional photographers the ability to capture stunning images more easily in all conditions.
New functionality; enhanced performance
During AI Servo AF shooting in low light, viewfinder information is now illuminated, with the AF points blinking intermittently in red, allowing them to be easily confirmed whilst shooting, without affecting the metering of the scene.
Getting closer to the action is also even easier, with the firmware update allowing photographers to use extenders to increase the focal length of their super telephoto lenses, whilst maintaining the use of AF to capture a crisp, clear shot. Enabling the utilisation of telephoto zoom L series lenses plus extender, the centre AF point (one cross-type with four supporting points) can now be used to auto focus at a maximum aperture of f/8.
The firmware update v 1.1.1 is released for cameras with current firmware up to v 1.0.6. Firmware update v 1.1.1 is available to download now from: http://software.canon-europe.com
Canon EOS-1D X Firmware v1.1.1 – new features:
• Auto focus with f/8
• Illuminated AF points and viewfinder information in AI Servo AF mode
Canon EOS-1D X Firmware v1.1.1– fixes:
• Corrects a phenomenon where the metering value of the AE sensor becomes abnormal, affecting the final image
• Corrects a phenomenon where Error 70 may occur during AEB shooting
• Corrects a phenomenon where the firmware of the lenses cannot be updated normally
• Minor corrections to Arabic menu