I do not have that Canon, so am only guessing here, but most digital cameras have a Menu option to set the file naming conventions. What does your Canon show in that section of its Menu?
Good luck, and wish that I could do more than just guess here.
Ron/ Station. thanks. I did recently, upon recommendation of a retuocher, change that color space to Adobe from srgb. So that's it?
I guess its a good remider/ indicator for which space you are on..?