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On the Phoblographer’s Blog
For a little while now, camera companies have been putting phase detection sensors on the camera’s imaging sensor pixels to make autofocusing faster and more accurate. So far, the one company that seems to have been doing it best is Canon with their Dual Pixel AF technology. This technology is present in their 70D camera and is quite good at focusing on subjects.
But 43Rumors found a patent that might be even better. The 70D covers around 80% of the sensor when it comes to focusing with the Dual Pixel AF technology–and to one up them Olympus’s patent describes the ability to focus using every pixel.