Here is my FrankenKamera V, which connects my Sony A7R (which, to my surprise, remains the best overall performer of the A7R series for the type of long-exposure-at-base ISO nighttime photography I prefer) to various C/Y lenses and provides a generous range of rear rise / fall movements via the rear standard of a Toyo VX223D medium-format view camera:
And FrankenKamera VI is similar in design, except it connects my DIY-modified, full-spectrum Samsung NX500 to my various C/Y lenses via the front standard of a Toyo VX23D:
The A7R body is the mounted to FrankenKamera V via Cambo Actus rotating camera mount bracket, so changing camera orientation from horizontal to vertical is quickly and easily accomplished. The same could also be done for the NX500 body, but since this is a budget project, I chose not to incur the expense of purchasing a second rotating camera mount ($219 from B&H) and simply rotate the camera mount panel with the NX500 attached in a fixed position (via a modified reverse ring) instead.
Both cameras use external batteries (to remove the heat of a discharging battery from inside the body, which makes a noticeable difference in the sensor's noise performance during our hot summer nights here in Arizona) and they're often, but not always, used with an external HDMI monitor to make composing and focusing in dim light a little bit easier.
And neither of the two standards I borrowed from my VX23D have been permanently modified, so I can restore it to its original form in 20 minutes or so, should I ever need a greater range of rise / fall movement or shift, tilt or swing movements: