Canon releases 1D firmware update
posted Wednesday, October 17, 2012 at 11:15 PM EST
With the latest firmware update, the Canon 1D X "will now be capable of AF point illumination during AI Servo AF and cross-type AF for maximum apertures as small as f/8."
If you're working in any low light situation, the new firmware can illuminate the autofocus points in red when you press the Shutter button halfway. To preserve metering accuracy, illumination is intermittent and you can further refine behavior in the menu system to select Non-illuminated, Illuminated (Normal) and Illuminated (Brighter).
The new firmware also allows cross-type autofocusing with the center AF point even when the maximum aperture of a Canon EF lens/extender combination becomes as small as f/8. That's helpful for photographers who often use EF super-telephoto lenses with extenders, expanding the range of EF lens/extender combinations that support autofocus when used with the EOS-1D X.