The _2's were the RAW files, yes. But, you may want to look at both versions for a few pics. I'm not sure who's RAW -> JPG version is better, Canon's in-camera or iPhoto's. Personally, I use DPP for my RAW conversions.


Note that if you import your pics to a Mac using a CF card reader instead of connecting the camera, the CF card mounts as a disk on the desktop - you can then simply copy the files to your HDD.