charjohncarter
Veteran
Why not? My Leicaflex SL has a micro prism central focusing aid and focuses beautifully when I have it on the tripod. The optical effect, just like with a split image focusing aid, is not dependent upon camera motion.
(I mostly focus with the surrounding matte fresnel field anyway, but the aids are intended to get you into the ballpark quickly, if not as accurately.)
G
I never had a Leica SLR but I can't focus my MP finder(s) when it/they is/are on a tripod (it seems to need a movement for my eyes). I guess I have to yield to your superior vision.