Is there a way to connect a Canon 5d MK2 to an iPad for copying the contents of the CF card especially in Raw format?
I have done this with my iPad and the camera connection kit using a USB CF reader and the USB connector on the iPad. I found it was much faster using the reader than the camera. I was even able to upload some of the better pictures to my photo hosting account using a 3rd party app. I will say though to not use it as the only tool to decide if the color is image is worth keeping. On mine at least the color rendering is not as good for RAW as Adobe Camera Raw.
Using Apple iPad Camera Connection Kit you can connect your camera and your iPad. Since yor camera has a CF card you cannot use the SD card reader, you have to use the USB connection.
According to this review it may not work:
The iPad had no issue bringing in a huge group of 10-Megapixel photos from a Canon Powershot S90 camera, but repeatedly choked mid-stream when trying to import a bunch of 21-Megapixel JPEG images from the Canon 5D Mark II. Some of the 5D Mark II pictures transferred without an issue, but the import process typically stopped abruptly after fewer than 10 images—an apparent bug.
I've used the Camera Connection Kit to import JPG, PNG, RAW, NEF, and RW2 photos with no problem. I use Photo Shack Pro to access the files I import and organize them into albums and libraries with titles and comments. It also gives me access to the photo's embedded camera metadata, lens, location, etc. The CCK is a much better way to go than iTunes, mainly because I don't have to lug my laptop along.