A6500 with Sigma 30mm 1.4
went to a wedding this Sunday. I took my A6500 with me and just left it at aperture priorty. OMG this cam w/ this lens is amazing. I wasnt even trying and just casually shooting with one hand....jpeg only as I wanted to share it instantly. Around 90/100 pics were all in focus (kids running around, etc). Im not a pro but this cam just makes it so easy. Funny thing was that everyone that had a camera (excluding the hired pros) was all Sony except for one nikon guy.
Did an indoor video at sunset around 8:30 est (lots of windows) with low lighting and the video came out like it was mid-day
About sony native lens...most good lens are expensive but there are some very reasonable priced ones like the 18-105 and 50mm. Also Sigma make E Mount lens like the 30mm 1.4
If you do get sony, make sure to get extra batteries