Focal Length

The focal length range of the camera's optical zoom lens is 4.0 - 20.0 mm.

Angle of View
The difference between the angle view of a wide angle shot and a telephoto shot is that a wide angle shot captures the background, while the telephoto shot does not.

Wide angle shot

Telephoto shot

Compression
The subjects are a lot closer together in a telephoto shot than in a wide angle shot. In a wide angle shot, the subjects' heads are smaller than in a telephoto shot, where the person at the end looks the smallest. The telephoto shot captures a greater depth than the wide angle shot.

Wide angle shot

Telephoto shot

Lens Choice
A wide angle lens is less flattering for a portrait shot than a telephoto lens, where the wide angle lens makes the subject look distorted. 

Wide angle shot

Telephoto shot

There is an apparent difference between a wide angle lens and a telephoto lens. It is best to use a wide angle lens when you are shooting a landscape, and it is best to use a telephoto lens when you are shooting a portrait.