I've used Hasselblad gear since 1974, and still have every lens and camera I've ever bought. About two weeks ago I came across an incredible deal on a mint condition 555ELD and a 22MG Imacon 528c back with Image Bank. It's a bit awkward having a cable to the Image bank, but I'd wanted a digital back for a while and it looked too good to pass up. Everything seems to work fine. But the 555ELD instruction manual and the Imacon instruction manual are pretty light on how to connect the camera to the back without the cable between the lens and the Imacon back that I use when shooting with an ELM or CM camera. I know from Hasselblad literature that the ELD can shoot with no cable, and the camera seems to "talk" to the back so that when I push the "digital" shutter button on the 555 the back triggers an exposure, but the camera doesn't fire, so the back's just shooting without the camera firing and giving a black exposure. Any suggestions?