Khalia Photo Radio Flash Trigger TF-363 Pawn by pixel - Studio lightning & Aufsteckblitze Sony eg for HVL-F58AM, HVL-F56AM, HVL-F42AM, HVL-F36AM, A900, A850, A700, A550, A500, A450, A350, A330, A300 , A250, A230, A200 and many more (electronic)
The trigger is certainly no bargain, but makes at least what it is supposed to: Raise. Both on an A550, the A77 and it solves my Metz MB48AF reliably. On the A77 that works well to 1 / 250s still good. The remote trigger so bring no additional delay