Upload & Sell: Off
Today I found myself at Sony Store with half an hour to kill so I decided to play with NEX-6 and NEX-7 EVFs side by side to see how they compare, and what is the impact of changing different settings. I am sharing my findings with those who might be interested.
The scene that I looked at was fairly high contrast with around 75% of it being the brightly lit store and 25% being the darkish evening view outside the store door (though there was still enough light that I could see everything outside with naked eye). Starting with default settings NEX-7 EVF view looked awful! It was muddy and also had orangish reddish tones - basically if you want to make someone hate an EVF you could show them that. NEX-6 was much clearer. By playing around a bit it was clear that NEX-7 was doing a lousy job at AWB under the artificial store lights (I don't know how the actual pictures looked, I was just comparing EVF view).
Setting both to the same custom white balance settings improved things a lot for NEX-7 and made the EVF views much closer to each other than before. However even after that NEX-7 EVF looked more contrasty with bright parts blown out and dark parts being pretty much black. NEX-6 retained detail in the bright parts and at the same time was showing a tiny bit of detail in the dark outside view (with the same manual exposure set on both cameras). I also played with decreasing the exposure on NEX-7 to restore the bright parts but of course as a result the dark parts were thrown into an even deeper black.
Finally I went to the step of changing the creative style and set the JPEG contrast to -3 on NEX-7. I still had to choose a shorter exposure on NEX-7 to stop the bright parts from blowing, and the final result of reducing the exposure and decreasing the contrast seemed closer to the NEX-6 view. But of course NEX-6 could play the same trick and setting the contrast to -3 on NEX-6 improved its view further with a bit more detail appearing in the dark parts. The final NEX-6 view was definitely an improvement on the best I got out of NEX-7. I wouldn't call it a day and night difference but substantial enough that it felt more natural compared to the artificial looking high contrast NEX-7 view. A random comment is that I appreciated the mode dial on NEX-6.
Based on this limited experience, if I ever buy one of these two cameras it would be NEX-6 (as I have no need for 24MP). The Tri-Navi on NEX-7 is nice in giving you all 3 exposure parameters directly - however I am not a fan of having to use the thumb for all 3 wheels. I like the canon way with thumb controlling the rear wheel and index finger controlling the front dial.