There are many files in ctg format in my digital camera. What does ctg mean? Audio, video, spreadsheets, e-books and so on, thank you.

The file with file extension CTG is a Canon digital camera directory file. When you connect a Canon digital camera to the CANONMSC folder through USB, you may find it in your computer.

Picture information on the memory card of Canon camera in the folder. This information enables the memory card to fill in and index the photos you took.

CTG files help Canon cameras distinguish personal photos and organize them according to their dates. What are these files that you can look through your previous photos when you are looking for a camera?

CTG files allow you to import files into your computer and take photos from your digital camera for printing and editing.

Do not delete or attempt to open the CTG file. These files can only work properly in your camera memory card. When you delete the photos in the memory card, the CTG file will be deleted and completed automatically.

Therefore, CTG files do not belong to any media files. It belongs to the index file of photos in the camera. It is recommended not to delete.