If you have a Hasselblad V-mount MFDB you can use it (with movements) with CF lenses with a Hasselblad Flexbody. If you have an H mount Hassy DCU it would be difficult or impossible to mount it to a Flexbody and get infinity focus.
With a Sinar and bag (wide angle) bellows I think you would be able to focus to infinity, but you have to insert a mechanism to cock and fire the shutter, or a lensboard shutter. Silvestri make such an adaptor, but it is expensive. The Hassy CF adaptor does this job, and I think it should be possible to mount it on a Sinar P3 lensboard.
Info anyone?
In theorie it should be possible to use the CF adaptor on a lensboard somehow.
I had a Flexbody before and now I use a Silvestri Flexicam with their adapter (it is quite expensive, yes). It works ok with the 50, 60, 80, 120mm, even at infinity focus, but I have to control focus after recocking the adapter (with a medium light tripod). Since I began investing in Digitars (35, 100, 72mm coming soon), I really don't look back at the CF/CFE lenses and the adapter (they are ok, really; and still very good on a Hassi V), but these Digitars play in another league. They are great! Don't know if I would buy an adapter again. Linhof brings an adapter for Rollei lenses on their new Techno, i would be interested to have news on this combo.
I think the old, big 4x5 view camera are maybe too bulky and large to work with Digibacks and adapters, a Sinar P3, F3, Linhof Techno Arca 6x9 or m-line2, Silvestri are maybe a better choice to go.
Tom-