Total newb question, but is it possible to swap interface plates on digital backs? Say a Phase One w/ Mamiya interface, changing it out to a Contax interface?
It is not possible to change the interface plate on a Phase One back as you can with certain other brands like the Sinar.
Phase One has a service called a "Platform Swap". If your back is under the Value Added Warranty you can have your whole digital back swapped out to a different mount one time during the warranty period. If your back is under the Classic Warranty or out of Warranty Phase One charges a fee of $3000.
It is best to contact a Phase One reseller to check whether the back you are considering doing a Platform Swap is a)still under VA warranty if it ever was and b) that a swap has not already been completed. We do this as a courtesy service for people considering a Platform Swap often. All we need is the serial number.
Hope this helps.
Lance