From LPA Design/PocketWizard:
MiniTT1 and FlexTT5 Beta Firmware for Canon 5D Mark III
So. Burlington, VT – August 31, 2012: LPA Design, manufacturers of PocketWizard Photo Products, the world leader in wireless control of cameras, flash lighting and light meters, announces today the release of MiniTT1 and FlexTT5 for Canon 6.153 beta firmware with 5D Mark III compatibility.
The beta firmware release notes and instructions on how to download the beta firmware can be found here.
Please note that this beta firmware release for Canon does not include compatibility with the Canon EOS-1D X or the Rebel T4i.
Learn more about our firmware development plan here.