Peeb said:
I think that the mirrorless EVF 'seeing' your image in the viewfinder could be a compositional game changer for me. For instance, If I set the camera to b/w, I won't have to transpose in my head what the captured image will look like- it'll be right there before I snap. Very nice.
YES, for some people, this is the way they feel they shoot the best--literally "seeing the image" as the camera interprets it, from the LCD display on the back, or through a viewfiner window that shows the LCD image internally.
Kirk Tuck, a seasoned professional, really,really likes this, and now shoots mirrorless smaller camerras for much of his commerical work. AND he does pro-level video with this gear too.
For other people, the slower refresh rate of even the best LCD displays, is not rapid enough for high-speed action work (sports,wildlife,motorsports, etc). And the battery drain issue of LCD viewing/compising: that issue of an always-draining-juice-just-to-see-the-picture system....ehhhh...
Of course....there could also be a simple optical viewfinder window on fixed-lens cameras, for a Leica-style window-with-changing-framelines for like a 28-35-50-85mm rangefinder-style mirrorless....man! Or separate, bright-line optical show-mount viewfinders, like the Voigtlander viewfinders, for primes.
But the issue with so many current Nikkor prime lenses is how large they are: the barrels would block the viewfinder on any small camera...rangefinder lenses tend to be very small, so the do not block the peephole viewfinder at all, or at least not too much. Today's Nikkor 50mm f/1.8 AF-S G with hood is a BIG, fat lens! Older 50's, not so much. Same with today's 85mm f/1.8 AF-S G...veryt fat-barreled, compared to say the 85/2 Ai-S, which is small.