You asked
Sony rx10 iii vs canon powershot g7 x mark ii?
The Sony RX10 III and the Canon PowerShot G7 X Mark II both have a 1-inch, 20.1-megapixel sensor and were announced in 2016, but they're built for different jobs.
The RX10 III is my pick if you want reach. Its 8.8-220mm lens frames like 24-594mm on full frame, so you can get close to wildlife or sport from a distance.
The G7 X Mark II is the compact option. Its 8.8-37mm lens frames like 24-99mm and is brighter at f/1.8-2.8, which helps in low light and gives a shallower look, but it won't reach far.
Choose by what you shoot. Take the Sony RX10 III for distance, or the Canon PowerShot G7 X Mark II for a compact you'll carry everywhere. If you're new to this, your first camera explains why a 1-inch compact is a sensible step up from a phone.
Written by Claude from this site's pages.