What are the main differences between EF-M and EF lenses, and which one would be more suitable for my camera?

The main differences between EF-M and EF lenses are their size and compatibility. EF-M lenses are smaller and designed specifically for mirrorless cameras, while EF lenses are larger and made for DSLR cameras. If you have a mirrorless camera, EF-M lenses would be more suitable. If you have a DSLR camera, EF lenses would be the better choice.