Canon Europe has released a video about the New EOS5D MarkIII. It has a headphone jack. The EOS 5D Mark III is the latest addition to Canon's world-famous EOS 5D series. Building on the performance of the legendary EOS 5D Mark II, the new the EOS 5D Mark III offers improved speed, greater resolution, enhanced processing power and extended ISO.
From press release:
“Next generation EOS Movies
The EOS 5D Mark III builds on the reputation of the EOS 5D Mark II, with a range of new features introduced following feedback received from photographers to provide even better Full HD video performance. As well as offering the depth-of-field control loved by video professionals, the new full-frame sensor combines with the vast processing power of DIGIC 5+ to improve image quality by virtually eradicating the presence of moiré, false colour and other artefacts. The addition of a movie mode switch and a recording button also offers greater usability, enabling videographers to begin shooting immediately when movie mode is engaged. Additional movie functions include manual exposure control and an enhanced range of high bit-rate video compression options, with intraframe (ALL-I) and interframe (IPB) methods both supported. Variable frame rates range from 24fps to 60fps, and the addition of SMPTE timecode support provides greater editing flexibility and easier integration into multi-camera shoots. Users can also check and adjust audio during recording via the camera’s Quick Control screen and a headphone socket enables sound level monitoring both during and after shooting. Enhanced processing power provided by DIGIC 5+ also makes it possible to conveniently trim the length of recorded movies in-camera.”
Sample videos: