Good value for money and features. Every feature I tested worked well when I limited my shutter speed to X-Sync or below. The exposure was very good, maybe a little lower. In addition to X-sync speed, high-speed sync (HSS) has become more unstable. If I tried to lock the exposure with my camera's FV function, all exposures would be more than 23 EV too low. The pre-flash at FV lock was strong, almost full, but when the shutter was fired afterwards, the actual flash was very weak, regardless of…