>>4384230>samyang already did this last yearSamyang isn't in the running.
You most likely read one of those bad reviewers who used their ancient A7Rm3 for testing, who concluded the ancient camera's bad AF algorithm made both lenses suck.
everybody else tested the 2 lenses on modern camera bodies, and the stepper motor in the Samyang lens definitely fell behind the new linear motor in the Viltrox.