We know that 1DX OR 5D3 + AF assist beam = slower focus, now canon is sending email to Canon 5D3 and 1DX users that Canon will be releasing a firmware update for the 5D Mark III and 1D X to correct an issue where the camera’s are slow to focus when used with a Speedlite’s AF Assist Beam.
Dear XXXX,
This service notification e-mail contains important information about your EOS 5D Mark III Digital SLR/EOS-1D X Digital SLR Camera. Please note that product service announcement e-mails contain advisory or informational content that may be critical to the proper operation of your product, including safety, update, and instructional messages. Please carefully review the information in this e-mail as it relates to your Canon product.
Thank you for using Canon products.
Affected Products
EOS 5D Mark III Digital SLR Camera
EOS-1D X Digital SLR CameraDetails
Depending upon the shooting conditions, it may take slightly longer for the EOS 5D Mark III and 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 and 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 and 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
