A study on auto focus for 8K camera using on sensor phase-difference detection

Abstract

It is not easy to adjust 8K camera's focus precisely. To resolve this problem, we are researching for on sensor phase-difference detection system that is a fast auto focus system. In this report, we describe the new signal processing to suppress crosstalks between phase-difference detection sensor pixels. This can improve error-rates of phase-difference detection. Actually, we had done experiments about auto focus using 8K sensor with on sensor phase-difference detection, and verified that our new signal processing is effective for improvement of its accuracy.