Contrast based autofocus just doesn't compete either. New, higher end mirrorless cameras still use phase detection just like the DSLRs of old. Sony still uses

Contrast based autofocus just doesn't compete either. New, higher end mirrorless cameras still use phase detection just like the DSLRs of old. Sony still uses old-style sensors but mounted directly on the chip, while Canon uses pixels that only accept light from some directions to calculate phase information. Both of these tactics end up with very similar results. Though it is augmented with DSP.