Pocketwizard MultiMAX Transceiver lens mount_Olympus OM They can run off AC

They can run off AC power or V-mount batteries (available separately)

It's not electronic

Leitz FIKUS collapsible lens hood for 5cm

Fujicas use a modified M42 mount that is compatible with standard M42 lenses

Pocketwizard MultiMAX Transceiver lens mount_Olympus OM They can run off ACThe Pocketwizard MultiMAX Transceiver is a sophisticated triggering solution for Pocketwizard systems, with multiple delay and triggering modes for flash and camera control. Light marks on body and screen, none of which affect function. Includes PC sync cord; does not include the pictured stand. Note that this item is a single transceiver; you will need at least one more Pocketwizard device to trigger a camera or flash as described above.