aflundi wrote:
Yes, they do not use dual-pixel, but at least some Sony models (including the A9) apparently can't see horizontal detail with their PD implementation. Is that true of dual-pixel technology as well since it also looks like a highly directional implementation of PD?
As a side note, I just pulled out a Nikon 1 V2 to see if its PDAF suffered from detail directionality, and however they built the on-sensor phase detectors, it seems to be able to instantly focus on detail in any direction.
I have been googling the issue here for a while and there seems to be no reference to a failure in horizontal AF with DPAF. Perhaps others can find definitive proof it has this failure.