That’s how I use the Nikon D850, with no mirror (or mirror-slap) and only LiveView. I never was infatuated by the mirrorless concept just because it was a smaller camera. I like the size of the D800E, D810, and D850. If anything I liked about the concept of a mirrorless camear was the “idea” of using alternative lenses, getting perhaps a greater field of view out of some really fine lenses.
I was disappointed with the Pentax K3 and K1 (which I owned) and how little they lent themselves to alternative lenses. Same goes for the Hasselblad X1D (which I bought); although they have some nice lenses of their own, they did not care about all my lenses. As for the Fuji GFX (which I also bought), I held out hope for it accommodating the many great lenses I have, and they did do a so-so job, IMO; they kind of came half-way, but certainly not like I had hoped or imagined.
I sent all the above cameras back or sold them and was left with my Nikon D810, which did work for me and which I appreciated. But my thirst for what I imagined mirrorless might bring was still there.
Then along came the Nikon D850. It was everything I could hope for in a mirrorless camera other than it was heavier (which I did not care) and it had a mirror (which I never have used, other than to test it). The Live View LCD on the D850 was just enough better to be fully usable by me and those few extra pixels (45.7 Mpx, which don’t seem like much, are just enough to quench my thirst for a larger sensor.
Then it dawned on me that most of my search for a medium-format mirrorless was about the EVF and not about the presence or absence of a mirror, a larger sensor (or so I thought), being smaller, or anything else. Give me a workable LiveView screen, an electronic front-curtain shutter, silence, and turn the mirror-up off and I am a happy camper. I am.
So, the bottom line for me is that I am interested in what Nikon will come up with in their potentially forthcoming mirrorless camera, but I don’t need it. Yes, if it is 100 Mpx I would turn my head and if it had an even better EVF that might interest me too. But I doubt we will see in it THAT large a sensor and actually I don’t really need it. My very fast computer is already chugging on the D850 files.
For me, the Nikon D850, as I use it, IS the mirrorless camera I always imagined AND it has all the other goodies that I have learned to love in a Nikon DSLR.
If I had to guess, I’ll bet that the forthcoming Nikon mirrorless will NOT add up to what I have right now in the Nikon D850.
Your thoughts, other than that I may be crazy. LOL.
Shot with the Nikon D850 and the Schneider Macro Varon 85mm f/4.5