My second shooter has the 5Diii, and I am having trouble opening her raw files into my bridge and photoshop (CS4). I am using a 5Dii. The files are named differently and I can't preview any of her files in Bridge and Photoshop will not load them. ?
The 5D Mark III was first supported by Adobe Camera Raw 6.7 (for CS5) and 7.1 (for CS6). ACR 6.7 is not compatible with CS4. CS4 is simply too old.
The 5D Mark II has been supported since ACR 5.2 which is compatible with CS4.
Your choices for the 5D Mark III: