I use Metz-52 AF-1 on Sony A7. Build quality and flash work is very good for me.
But AF-beam (focus assist) from flash unit is not activated. I did "On" at "AF-beam" in flash settings and "On" at "focus assist" in camera setting, and still red diode work from camera only!
What is wrong?
All firmware is up to date. Sony A7 - V3.1 and Metz-52 - V1.2.
PS: I was using YN-568EX on Nikon D7000 with laser AF-assist two years ago (before I moved from Nikon at Sony). This couple work very good: camera is focusing in any dark even at long range.