In your case. It just looks like the mesh and camera aren’t centered and squared up.
Check everything and manually move the camera in the viewport/ configure it to 55mm or similar.
Barrel and Pincushion are lense artifacts - as such changing the camera will produce different results.
Doesn’t work 100% like real cameras, but it is rather similar.
Regardless. Very much doubt that’s your issue.
Could be light angle being different too. Shadows would play a lot with those edge colors.