On my old Olympus I was able to assign pro capture (pre burst) to a custom setting. Fuji allows this too. The R7 doesn't allow it, unfortunately...any work around? Assign to a button?
It's a pain having to go to the menu each time.
I have it assigned to a button on my R7. I use the DOF preview button for it. If I press that button, I then press the joystick in to select it, flip it down to change from disable to enable (or up, if I'm cancelling it), and press it in to select that setting. The whole thing takes less than one second, and I can do it without moving my eye from the viewfinder. I find this much more convenient than assigning it to a custom setting (I didn't know you couldn't do that).