This. Lens lineup is a big drawback for sony right now. You can use an adapter, but that's a compromised solution.
Light weight with the Sony is a plus and minus depending on usage.
Outside of medium format sensors, the Nikon offering is the out there for static type shooting where detail and dynamic range are at a premium.
You can practically shoot one shot HDR with the d800... I've processed thousands of files. Used to be with Canon. D800 easily wins here.