Jae,
I have a 5D2 and Capture One Pro.
1.Switch on and connect your camera to your computer.
2.Open EOS Utlity and select "Monitor Folder"and choose or create a folder to display your images.
3.Open Capture One and navigate to the folder you selected in step2.
4.Open EOS Utility again and select "Camera Settings/Remote Shooting and take your shot.
You may find that DPP opens a window showing your shot but you can just close it and that shot should be displayed underneath in C1 ready for any adjustments.
Hope this helps.
