To Users of the Canon EOS 5D Mark III and EOS-1D X Digital SLR Camera:
Thank you for using Canon products.
EOS 5D Mark III Digital SLR Camera
EOS-1D X Digital SLR Camera
Depending upon the shooting conditions, it may take slightly longer for the EOS 5D Mark III / EOS-1D X digital SLR cameras to acquire focus when using the Speedlite's AF Assist Beam, compared with that of the EOS 5D Mark II / EOS-1D Mark IV digital SLR cameras using the Speedlite's AF Assist Beam.
We are developing a solution to enhance the focusing feature for the EOS 5D Mark III / EOS-1D X and plan to release a firmware update based on following estimated schedule:
- EOS 5D Mark III: (estimated) Late April, 2013
- EOS-1D X: (estimated) Late May, 2013