It is unlikely and probably impossible to create a CR2 digital image from a .tga source. Digital RAW photographs are recorded by digital cameras and cannot be created in software only. TGA is also not a raw format, but already compressed so unsuitable for this task anyway.
Convert Truevision TarGA bitmap image to Canon digital camera RAW image format version 2.0.
We found 3 software records in the database related to .tga to .cr2 file format conversion.
Microsoft Windows software - convert tga to cr2 on Windows
One of the best bitmap graphic editing program
Convert from tga file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned tga to cr2. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Photo Manager is digital photo editor and manager for Windows
A complete image retouching program