Quick View of What's New With The 5D MK III

Changes from the MK II

For Photo:

- 61 AF System
- Transmissive LCD in viewfinder (Similar to 7D) allows for gridlines on demand as well as showing only the active focus points
- 6fps continuous shooting
- Larger optical viewfinder with 100% frame coverage
- Extended High ISO Range with native 25,600 and user expandable to 102,400
- HDR Mode
- Advanced Metering from Canon 7D

For Video:
- Embedded SMPTE Timecode
- Video ISO Range of 100-12800
- Headphone jack for audio monitoring
- Visual audio meters when recording
- Adjustable audio levels when recording
- 29:59 clip length
- ALL-I and IBP h.264 video codecs

Things to be aware of:
- No uncompressed HDMI output
- Does not accept EF-S Lenses (the 5D Mark II did not either)