Flash type for Power Sync with V6 as RX
What type of flash is needed for Power Sync functionality with a V6 RX triggered by a V6 II?
Is it true that not all flash types will work (ttl, manual, etc)? How do I know if one will work if it is not listed with a 'P' next to the selection? For instance if an otherwise compatible flash that just isn't listed. (Perhaps ad360 mark 1)