Originally posted by Fogel70 You can't have an EVF that matches DR of your eyes without a sensor that do it too. And it will probably take some time for sensors to get 20+ EVs of DR.
Just for the record ... this is false.
DR the way it is defined for photography (ratio of brightest/darkest features within an image) is rather limited for the human eye. It is a mere 6.5 EV if the eye doesn't move. It increases to a reasonable ~12 EV if it does move aka saccades (if you browse through the viewfinder image with your eye). However, this increase isn't instant and can take up to 4 seconds between saccades. This is why you better don't look
into the headlights of an oncoming car.
So, the newest breed of sensors already beats the eye wrt dynamic range. And by quite a margin actually!
Now, if you allow for the eye's dark adaption which can take up to 30 minutes!, then voila, the dynamic range increases to 20 stops. But not within 1 image or within 1 second ...
A photo camera does this much more easily and again beats the eye wrt dynamic range by quite a margin: it simply adjusts aperture, shutter and iso ... I invite you to count the stops between brightest at f/32, 1/8000, iso100 and darkest at f/1.2, 30s, iso51200
[it is 42 stops...]
The real problem is that EVFs don't have 12 EV contrast (would need 14 Bit controllers and oled or better technology) and that they are too bright, ruining an eye's dark adaption. So, EVFs are useless at dark and render a flat image at daytime.