Canon’s Dual Pixel Autofocus (DPAF) has been one of Canon’s biggest selling points ever since they first introduced the technology in 2013 with the EOS 70D DSLR. The technology has developed ever since, with the EOS R5 and EOS R6 cameras having some of the best AF performance available in mirrorless cameras today.
But DPAF isn’t perfect. It’s fantastic if the edge contrast of what you’re focusing on is oriented 90 degrees to how you’re holding the camera, but if you’re holding the camera horizontal and the edge you’re focusing on is also horizontal, it can struggle. This new patent suggests a solution. Quad Pixel Autofocus!