What are the key differences between Canon EF-M and EF lenses, and which one would be more suitable for my photography needs?

The key differences between Canon EF-M and EF lenses are their size and compatibility. EF-M lenses are smaller and designed specifically for Canon's mirrorless cameras, while EF lenses are larger and made for Canon's DSLR cameras.

If you have a Canon mirrorless camera, EF-M lenses would be more suitable for your Photography needs as they are specifically designed for that camera system. If you have a Canon DSLR camera, EF lenses would be the better choice.