To which aspect ratio is the camera set?
When you "copy photos to make copies" are you talking about prints or just displaying them on a computer or TV screen?
What photo software are you using to display the original photo file from the camera?
To be totally honest, I have never seen this issue, so I have no suggestions. I will "opt out" in case someone else has a reasonable solution.
Can you take me a sample picture and share it with me so i can see what may be wrong with the picture. The picture must come directly of the camera without being processed in any computer software.