What are the differences between the Canon EF and EF-S lenses?

The main difference between Canon EF and EF-S lenses is their compatibility with different camera bodies. EF lenses are compatible with both full-frame and APS-C sensor cameras, while EF-S lenses are specifically designed for APS-C sensor cameras. EF-S lenses are generally smaller and lighter than EF lenses, but EF lenses offer a wider range of focal lengths.