I was curious about the 30min limit for G9. I thought it was from overheating or something. I had A7R3 didn't think about 30min limit (don't think I ran into it) can't recall though.
It may have been, but at least in the EU, there was a tax of 4.9% for video cameras (vs. tax free digital photo cameras) in the past, causing many manufacturers to artificially limit the video length to 29:59 minutes to not be classified as such.
It's both, actually. I run an A7S2, you have to take care that the camera has a sun shade and the screen is angled away from the case so that the CPU doesn't overheat.
And obviously, you'll still need to run Openmemories ;)
