I typically use N-F tube and F or FtZ adapter to Z for 18cm f2.5, 25cm f4 or 35cm f4.5 but tried shooting with reflex housing the other day. It is a heavy rig so most definitely need a sturdy tripod.
End to end workflow sequences need getting used to... I don't normally shoot airplanes and missed the first few shots forgetting to correctly adjust the cables and couldn't quite get the timing right on some shots.
1) Setting up reflex housing and attaching cables to the camera (and optionally the motor)
2) Set aperture (wide open) and nail down focus, set back aperture to desired F value
3) Shoot using the finger-tip release button on the reflex housing (it has a long throw as
wes loder mentions above)
If you don’t have a motor attached
4) need to loosen the cable attached to camera shutter button to enable film winding or make sure the cable release have "just right" tension
5) reset mirror on reflex housing by pushing reset ring
If you have a motor attached
6) you can skip 5) because you have a motor but you lose vision if you shoot continuous shots because the mirror flip flop motion on the reflex housing is entirely manual and cannot be released during continuous shots for S3/SP/S4 (unless you shoot with S2E whereby the shutter button movement syncs with motorized film wind). Changing between vertical or horizontal frame can be easily done by using a button on the reflex housing.
18cm f2.5
25cm f4
35cm f4.5
35cm f4.5 missed sample