cameraCamera

Primary camera in mobile is referred to as the rear camera.

Use of primary camera

Still image capturing

Motion image capturing

Video recording

The front camera is referred as the secondary camera. This is commonly known as selfie camera.

Use of Selfie camera

Image capturing, mainly of own face.

Video recording.

Video calling

Dual camera

Though the dual camera means presence of two cameras. But in this mobile era the dual camera is actually mean either two dual rear cameras or dual selfie cameras. In the dual camera set up the first camera is used to take the image as of the other camera are doing and the other camera is used for depth of field.

Advantages of dual lens camera system in smartphones

Better depth of field in images

Better picture clarity

Faster focus can be achieved

Refocus ability