Almost all camcorders have a zoom lens, often quoted as two figures:

• An "Optical" zoom is a traditional lens which allows you to zoom in without loss of image quality.
• Many models also feature a Digital Zoom that can extend the magnification even further, but usually with a slight increase in "fuzziness".

Don't place too much importance on huge digital zoom capabilities. A 120x digital zoom may sound impressive, but there will be a lot of quality lost compared to a non-zoom image. But if you're off on safari, or similar, then it might come in handy in an emergency...