Piling on to this thread. Just back from Tulamben and Lembeh. I used almost exclusively MF-2 strobes on the trip. Lots of snooting with the OS-1, Definitely need use the top settings on the strobe. I am pleased with the results. My rig: Nikon Z8 Nikkor Z 105 Nikkor F 60 MFO-1 SMC-3 MF-2 OS-1