- better then a7r, a7, m9, m240
- low light is crazy good!! So many photo I can't take before at night I can now!
- good light Dynamic Range is awesome!
- light body with water and weather proof
- manual lens focus peaking + magnify + awesome EVF= better focus mechanism then Leica M
- a7s better support for old lens then a7 or a7r
- using manual lens better then 5d3
- ISO 25600 is acceptable, ISO 12800 or below is good enough equal to 3200 ISO noise!