Took many pictures with my 6D Mark II, when I look at the photos in the image viewer on the camera, all I get is a big question mark. My updates (both Canon and Mac OS) are all up-to-date. These are photos that will never occur again, is there a way to recover the files. Other apps (such as the latest Photoshp say the file format is not recognized and Finder flat out states the file cannot be opened. Canon Professional 4.0 gives me the same thing as the camera. Please help.
