I love the color change between daytime and nightime in this video:
I expect you'll need to click through to embiggen the video above.
You know, I'm not 100% on-board with the fantasy of having a digital camera with "through the lens" viewing with the eyepiece. Now, I totally understand why a fellow might want such a thing.
But I find that I do a LOT of shooting (for instance) the sun, lasers, other stuff that would instantly blind me if I didn't have the protection of a tiny TV in my eyepiece.
But I do want an end to rolling shutter artifacts. The Sony F55 uses a shutter which presumably eliminates rolling shutter artifacts.
I realize I'm the odd duck here, not wanting to be able to look through the lens without a closed-circuit television between me and the image. But I shoot lasers and the sun a lot. And I've gotten very used to being able to do that without hurting myself.