There is a lot of buzz about the IQ coming out of the NX1 so I downloaded the NX1 studio "DNG" files from DPreview and did a few comparisons...You are free to make up your own mind, but so far I cannot agree with people who say that the NX1's high-ISO noise performance is close to "some" current full frame cameras, I'm just not seeing it.
The NX1 seems to be the camera everyone wants to love. 28 MP...BSI...insane number of AF points...15 fps...on paper it looks like it blows away the competition.
Reality is turning out to be a little different.
Turn off the NR and the sensor is no better then competing crop sensors. That's not a bad thing, it's definitely at the top of the heap and IQ is excellent. But it's not FF, and it does not offer a high ISO, DR, or detail gain over the competition.
AF at 15 fps? Well...
In TheCameraStoreTV's review (https://www.youtube.com/watch?v=1flm65f2Gy8
) there's a short AF tracking sequence. Their stated opinion was that it did well, but I think anyone who has used an upper tier DSLR would be horrified. Half the frames were OOF while tracking a guy approaching at the speed of a brisk walk / slow jog. They also noted that single shot AF performance was poor in low light and inconsistent at best in good light.
Golden City Film's review (https://www.youtube.com/watch?v=cplbNmft74k
) is painful to watch. These guys need a script, a 20m time limit, and a few Red Bulls. But to the point...their review of the NX1's AF and EVF could hardly be worse. They hated it in the studio and when trying to shoot running dogs. You can tell the one guy doesn't like Canon. He even says at one point that he laughed when the NX1 was announced hoping it would be a 7D II killer from the paper specs. But he's keeping the 7D II having concluded the NX1 is useless for stills in the situations he needs, both sports and studio work with strobes. The review is...harsh on the AF, the EVF, and also the buffer.
On the other hand...every review has glowed about the NX1's video quality. Everyone seems to love it. No one is even bothering to talk about video on the 7D II. Which is a shame because I would imagine the 7D II has the processing power to output 4k and to do a better job on video quality. I'll be the first to point out that the 7D II is a very targeted, high end crop sports/wildlife/action camera, not a video camera. Never the less Canon seems to be slipping on video, at least outside of the high end, $,$$$ pro market.