I am experimenting with my new Pocketwizards the TT1 & Flex TT5, which allow full E-TTl on remote flashes. I am finding some limitations with shutter speed/aperture being automatic and every bone screams; “Put it into Manual Gary!”. Still doing not a bad job though. This is a single  580EXII fired through softbox camera right. ISO320, Shutter Priority, 1/1000th at f/4.0.