Quote Originally Posted by Michel Hardy-Vallée View Post
Other two notable cameras for their switchability between 120 and 220 are the Mamiya C-series and certain Rolleiflex models.

My C330 shoots 220 at the flip of its pressure plate.
I have one of those switchable Rolleiflexen, a 3.5F. It was the main selling point for me. I pretty much only shoot 120 in that camera when I am shooting b/w.

My C220 was designed with the rotating pressure plate like you describe.

But I also have a C33 that can take 220; not all of them could TMK. You have to remove the 120 back door and install a 220 back door. It is pretty simple to do, and luckily my camera came with both doors.