Just noticed the native ISO range of ISO 250 - 25,600. I have seen references to 120 fps officially lasting 1.6 seconds (my count was pretty good!), a bit more noise than usual at higher ISOs, but not awful noise.
I am not trying to be too critical of the A9 III, but just trying to get past the headlines. From my perspective, the programable FPS is probably the feature I am most interested in but is also the feature I can see getting me into the most trouble. Respect....but no thank you. I like the idea of no flash max sync speed. But, whenever I am using flash, 1/125 - 1/200th is my target shutter speed anyways, 'cause, you know, I need a flash because there isn't much light. Max shutter speed of >1/8000, again, sounds amazing...except even on bright days I usually max out at 1/4000th. I do occasionally see wobbles with electronic shutter, but a faster readout speed will likely solve that.
Actually, the most impressive thing I may have heard about the A9 III is how people are raving about the AF system. I always need/want a better AF system.
But, then the negatives, CFE Type A cards...no. RAM of 8 GB...that is likely the same as my current R5, so actually not that impressive. Native ISO of 250 to 25,600. I could say what I care about is how clean the ISO is, but I am often using ISO 100 even ISO 50 on bright days. And there are reports (granted preliminary) of some slightly increased noise. So, no thank you.
I often fall back by thinking of % of pictures a new feature would allow me to get. I have no doubt I will buy a new camera someday; I enjoy gear too much. But I fully admit my R5 has a very small % of images that I try to capture where it can be improved upon. Next gen AF system, 14 bit for all files, not changing fps with battery life, control over fps in electronic shutter, better control over video button, a legit pre-capture mode, a few things like that. And, if they can get better IQ...somehow...always better IQ. But the R5 is a beast of a camera. I am very happy with it.