Pixelking E-TTL Wireless Flash Trigger Set for 2 flashes (1x transmitter and receiver 2x) up to 100m for Sony Flashes and Sony DSLR (Electronics)
The kit works with the Sony A77 (Firmware 1:07), a Sony HVLF-43AM and a Metz 52 AF-1 well - only the automatic control of the zoom at Metz is not working. but since I translucent umbrellas or honeycomb paper or softbox use, I set the zoom level to a