How does a smart phone camera focus without any miniature motors to move the lens? - Quora
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Autofocus - Wikipedia
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Fully Explained: How Smartphone Cameras Focus | The Smartphone Photographer
Galaxy phone or tablet camera does not focus on the subject
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How do photos taken on my phone manage to come out so sharp? (Much sharper than old fixed-focus images.) Do phone cameras have auto-focus? Or is there some digital way of focusing
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Camera Module | SAMSUNG ELECTRO-MECHANICS | Mobile
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How Cameras Focus - A Guide for new photographers
How do cameras/smartphones with autofocus know when the image is in focus? How does software judge “crispness”? - Quora
How Focus Works | B&H eXplora
How do cell phone cameras focus without moving lenses? - Quora
How does autofocus work on your smartphone? | giffgaff
