Firmware Fix Announced For Speedlite AF Assist Beam Issue On EOS 5D Mark III and EOS-1D X

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Concerning the Speedlite AF assist beam issue occurring with Speedlites used with a Canon EOS 5D Mark III or Canon EOS-1D X, there will soon be a firmware fix. In the EOS forum at Canon USA, a forum moderator wrote:

Canon has confirmed that, 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 firmware update to enhance the focusing feature for the EOS 5D Mark III and the EOS-1D X. The schedule for release of this firmware update will be announced shortly.

“Announced shortly” could mean in April, when Canon is set to release a firmware update for the EOS 5D Mark III. Don’t think they will release another one before.

Canon EOS 5D Mark III price check: B&H Photo, Adorama, Amazon USA, Amazon Canada, Canon Canada, Canon USA Canon EOS-1D X price check: B&H Photo, Adorama, Amazon USA, Amazon Canada, Canon Canada, Canon USA