Thanks Dustbak, I was hoping that Hasselblad would have a more user friendly system than Leaf. The idea of quitting software to make changes is not appealing, and I don't understand why it couldn't be done from Phocus. But at least you can still power the back by firewire while making the change. With Leaf I had the situation of shooting with H1 tethered to laptop, then deciding to change to Cambo wide. I needed to disconnect firewire, connect battery, make change to camera type, remove battery, reconnect firewire, make software changes as to which camera connected, reconnect camera in software.
Unfortunately it looks like Hasselblad will be clumsy as well. It looks like its just a matter of quitting Phocus while the camera type is reselected in the DB, but the crunch looks like you must change the shutter speed in the software as well as on the shutter when doing long exposures, say in the range half sec to 15 sec which I use a lot. It will make bracketing very tedious, unless I am misunderstanding the proceedure.
I have not been using the H4D50 on a view camera much yet. I haven't sold my Aptus 75s yet until I get more familiar with the blad, and have still been using the Aptus for view camera work..it is convenient having its own battery. I have now got the Big Wave external battery which I will be trying on the blad soon. I have had a few issues tethering to macbook pro with the H4D50 (not with view camera) where the connection was just lost but later returned without any apparent reason. It is a 10 m fw cable which has done a fair bit of work, but it works OK in studio connected to Mac Pro (tower) . I have just received a new cable and it looks like I'll be giving it a good workout tomorrow, so, may have some feedback then.