I'm about to try out some different diopter strengths for my RZ IID WLF viewfinder magnifier, as focussing is not quite as easy as I'd anticipated. There is a -1.5 on it currently, but I don't use anything but +1 reading glasses (when I use glasses at all).
Got me to thinking, though... anyone ever use a loupe (ala large format) on the WLF of an RZ? Marcus Klinko has a handheld magnifier with a little "cozy" sewn around it to act as a dark cloth of sorts.
you can kind of see it here:
There are youtube videos as well that show his set-up.
I shoot on a tripod basically all the time with a fairly narrow region of focus and was wondering what a 4x loupe on the screen would be like.