Focus :- Focus refers to a Cameras Lean's ability to adjust its Configuration in order to fucus properly on a subject regardless of whether it is near or far form the Camera.
Mobile Cameras has working on two types of Focus. 1. Auto Focus (AF), 2. Fixed Focus (FF).
Auto Focus (AF) is a feature of Digital Cameras that allows them to Focus correctly on a subject. It enhances the Quality of the photo over Fixed Focus Cameras and allows for Close-ups or the even closer Macro shots.
Phones use passive auto-focus with contrast measurement. This means that the camera needs contrast to focus and have problems focusing on a blank wall or in low light conditions.
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