Hello, would someone be able to check to see if the red focus assist light located on a flash unit will work with the Z mirrorless system. Doesn't matter what brand of flash. I posted in the flash area but I understand why I didn't have a response. I watched a video by Peter Gregg and he could not make the red assist light located on the flash to work with mirrorless. I am considering adding a Nikon Z series in the future and would like to know if it is a mirrorless problem. I tried in on Olympus and the light will not work. Thank You.