Bought for my Alpha 57 to Metz MB 44 AF-1. The flash fits the Zubehöhrschuh and sits by tightening the knurled nut firmly. Flash works fine. ADI-operation no problem. Illumination very good. The slave also funtioniert function without problems. I had my doubts at first because of the price. But I would buy it immediately. As a note: a Stanfuß is not there - but would be good for the slave function.