From Alpa's recent
article on shutters:
"
The digitization of photography has brought another change in shutters. If one could simply unscrew the front and rear lens elements of a lens from the shutter at analogue times and then use the shutter in another lens, this is no longer possible today. One reason for this is the lack of housing stability of the shutters from the analogue period. Today the shutters are optimally adapted to the respective lenses and a shutter change would lead to a loss of the adjustment of the azimuth and the correct dimension of the aperture."
and, regarding electronic leaf shutter (Sinar/Roddie):
"
ALPA will introduce its own solution in 2018."
which I very much imagine is a rebranded (and repriced) sinar e-shutter.
So we're screwed. You have to get an eshutter with the new lenses, (unless Rodenstock are offering a factory calibrated retro-fit of Copal 0) With a shutter speed of 1/250 the maximum. So no more freezing moving people, using FPS, for example.
And
Yes, even if you are using the digital back's own Electronic Shutter, you need to be able to lock open this lens shutter and set an aperture, so you'll still be need this eShutter and the controller. Another $2500. Lucky you.
Sigh...