It’s been a bit agonising to have to sit on my hands whilst waiting for IBC to announce this, but Blackmagic Design have added a passive m4/3 option to the Blackmagic camera.
This is a really significant step. It means there are now essentially an alternative mount to choose from. m4/3 is a much more appropriate lens mount option considering the sensor size is nearly perfectly matched to m4/3.
As the mount will initially be passive, you should think about this mount if you are happy with manual IRIS lenses. Most likely you’re going to be putting on something like an adaptor to Nikon, C Mount, or PL lens mounts.
You can of course also go for the growing range of manual focus and iris m4/3 lenses like the Voigtlander 17.5mm F0.96 or even the SLR magic novelty-lenses.
This is really great news because it now means there is a hug number of lenses that can be potentially adapted to the mount, including of course, PL mount.
So to recap, the m4/3 version will be IDENTICAL to the EF version in every other respect, and you should be able to switch your order without penalty (dealer dependent).
The m4/3 version will start shipping in December.