I can use my M42 screw mounts, to my Nikon, and Leica M mounts! Color rendition are great! Menu takes a bit to get to use to but I love the fav feature!
This is a great camera to have with Sony a 24-240mm zoom lens. It is lite enough to carry for a while and small enough with the lens to put in a "Sony" a6400 bag. The "Z" battery last a lot longer then a "W" battery and you can still carry it away you would take a full frame camera. Using the same operating program as most Sony cameras you can do a lot of things.
I bought this camera a month ago jumping from Canon and this is by far a game changer! Sony is on a whole different level which makes me even appreciate photography more, I carry my camera wherever I go now and I love how awesome it feels on my hand, this is definitely quality. I am very happy that I got the chance to get myself into Sony without even hesitating, I love my camera and I hope whoever else reads this really gets one because man I love this one so much, it was either this camera or the A7C but this one is awesome especially with the 1.8 50mm it is an absolute beauty.