It is crazy how much the quality of the camera's has changed. I haven't looked into DSLR camera's for a few years, since I have one and am not really in the market for one now, but have there been similar advances in that tech? As in, ground breaking higher quality, more compact form factors, etc? You'd imagine if you can get this type of quality from a phone's camera, you'd be able to make truly amazing things happe…
1) Autofocus. Check out Sony A7 III or A9 reviews, it's absolutely mindblowing. It focuses perfectly and is insanely fast.
2) Low-light sensitivity. You can get a used Sony A7s, which goes to ISO 490,000, and quite usable up to ISO 50K. At its highest ISO and with a relatively cheap f1.4 lens it's much more sensitive than my eyes - it can see in the dark, it's like night vision, but in color.
But that's what's available for purchase. Canon has demonstrated Canon ME20F-SH, which shoots up to ISO 4.5 million. Judging by the videos, it's absolutely nuts. I hope that tech becomes widely available soon.
3) The cost of RAW video cameras has plummeted. Blackmagic BMPCC 4K is $1300. Quite an amazing little camera that records straight to an external SSD via USB-C. This is cinema-level camera, though with quite weak ergonomics. Still, if you're serious about cinematography, it's an excellent choice, and it's very affordable.
4) Lenses keep improving as well. New 135mm/f1.8 is breaking MTF chart records, it outresolves all the sensors by a wide margin.
5) Medium-format digital cameras have become affordable as well.