Contrary to the other opinions here, I do find the switch to EVF takes some getting used to. As someone who has used SLR primarily (D850 last few years), here is my experience. One overall note I will make is that I find SLR viewfinders easier to use in bright sunlight but EVF as good or better in soft light and low light.
First EVF try: a brief test of Canon R5 on two different occasions. Viewfinder is awful to the point of being unuseable for me. (Too contrasty and electronic looking).
Second EVF: Sony A74 (owned for over a year now) and A7R5 (rented three days). Better than Canon and useable, though not as comfortable in bright sunlight. Over time I have gotten more comfortable with it.
Third EVF: Nikon Z7ii (rented for three days). Best EVF I have used. Very bright and SLR-like and reportedly the Z8/Z9 are even better. Only issue was lag at startup from sleep which makes Z7ii problematic for wildlife, but Z8/Z9 do not have this issue I believe.
One interesting observation is that EVF resolution seems to make little real world difference to me. The A7R5 I rented has three times the resolution of my A74 (9 million dots vs 3 million), yet they look almost identical. The Nikon Z7ii and Canon R5 and Sony A74 are all in the same range (I think 3 million dots, though I have not double checked to confirm this), yet their screens are very different, with the Nikon clearly superior and the Sony average and the Canon subpar.
This is my personal experience which seems to go against the dominant viewpoint on this thread. If you are considering a Nikon Z8/Z9 I think it's a non-issue, but for Sony and especially Canon I would recommend renting or trying one before you buy.
I have been using a combo of Sony (with 200-600) and Nikon D850 (with various zooms) for last year and a half, but my Nikon gear is all at KEH as I type this (I expect a confirmation of the bid price next week). Though I love Sony's lens lineup and am already partway in their system, I am considering going Nikon Z8 based partly on my experience with the Nikon viewfinder (but also based partly on the ergonomics of the Z8).
First EVF try: a brief test of Canon R5 on two different occasions. Viewfinder is awful to the point of being unuseable for me. (Too contrasty and electronic looking).
Second EVF: Sony A74 (owned for over a year now) and A7R5 (rented three days). Better than Canon and useable, though not as comfortable in bright sunlight. Over time I have gotten more comfortable with it.
Third EVF: Nikon Z7ii (rented for three days). Best EVF I have used. Very bright and SLR-like and reportedly the Z8/Z9 are even better. Only issue was lag at startup from sleep which makes Z7ii problematic for wildlife, but Z8/Z9 do not have this issue I believe.
One interesting observation is that EVF resolution seems to make little real world difference to me. The A7R5 I rented has three times the resolution of my A74 (9 million dots vs 3 million), yet they look almost identical. The Nikon Z7ii and Canon R5 and Sony A74 are all in the same range (I think 3 million dots, though I have not double checked to confirm this), yet their screens are very different, with the Nikon clearly superior and the Sony average and the Canon subpar.
This is my personal experience which seems to go against the dominant viewpoint on this thread. If you are considering a Nikon Z8/Z9 I think it's a non-issue, but for Sony and especially Canon I would recommend renting or trying one before you buy.
I have been using a combo of Sony (with 200-600) and Nikon D850 (with various zooms) for last year and a half, but my Nikon gear is all at KEH as I type this (I expect a confirmation of the bid price next week). Though I love Sony's lens lineup and am already partway in their system, I am considering going Nikon Z8 based partly on my experience with the Nikon viewfinder (but also based partly on the ergonomics of the Z8).