Finding missing camera specific picture data
As with all digital photo recovery based upon using a high end digital camera Canon file recovery depends upon successful scanning for and reconstruction of camera raw files. RAW files are special file types created by the camera manufacturer to temporarily store the digital image until said image is transferred and transformed by downloading it to a computer.
Each camera manufacturer has their own file types. Many of these manufactures have more than one. Canon has two so a Canon file recovery software program must be able to recognize either of these and recover them when they have been accidentally deleted. Only the best quality digital photo recovery programs are capable of recognizing RAW files and recovering them with the original file names intact. The same quality photo recovery programs usually allow one to preview the picture in question before selecting it for recovery.