LockCircle is following up the recent introduction of its LockPort800 for the Nikon D800 with the same HDMI port protection for the Canon 5D Mark III.
As with the LockPort800, the LockPort5M3 protects HDMI output on your camera from production abuse with a solid universal clamp and a mini to full-size HDMI adapter.
The LockPort5M3 retails for $119 and is available direct from LockCircle.com which shipping set to begin in June.