Image Sensor for Mobile


PDAF: Phase Detection Auto Focus

PDAF function is the high speed auto focus technology.
This technology has the following merits compared with a conventional one (contrast AF).

Case1: Moving Object

Object direction [Contrast AF search: Wrong search direction (near or far) Can't track the change of direction] [Ideal Phase detection AF: Can measure object distance on every frame]

Case2: Change Target from far to near Object

Near Object, Far Object [Contrast AF search: Need Search Step] [Ideal Phase detection AF: Can move object position directly]

Contrast AF search

Phase Detection Auto Focus