"According to the file format specification, Canon Crw Raw image files are parsed from their file ending. Because of the file size of Crw files cannot be taken by parsing data structure, it is very likely the file size is incorrect if a Crw file is recovered by file recovery softwares. Photo viewers cannot open Crw files with incorrect file size.
Crw Photo Fixer is a freeware. It was developed to calculate the file size of canon Crw photo files, and it will correct the file size if the data of Crw files are intact."Another new to me data recovery company.