newfoundmass

Yeah, I really can't think of a lot of reasons to film with the A7s over the A7iii. You might do a little better in low light, but it'll be lacking in pretty much every other way. Better rolling shutter, battery life, auto focus, IBIS (vs. None at all), color, less prone to overheating, etc. 
You used to have to really rig the A7s (and the A7sii) up to get the most out of them,  especially when it came to battery life. One of the reason the production company I was working with at the time ended up selling theirs and going with the GH4 was because that, the rolling shutter, and overheating. That low light though, it blew our minds at the time. Low light across the board has improved so much, but 10 years ago it was voodoo magic! 

shocker. overheats in 24p. 🙄
 

I think there probably is something to sensor size being a contributing factor to overheating, but I don't think it's THE factor. I think it's the processing and overall body design. I mean, up until the S1H, GH6 and the S5II/X, Panasonic have been able to do it in both M43 and full frame without a fan. It really might boil down to Panasonic having superior processing (not just power, but more efficient coding) and body design. Once that wasn't enough to handle heating issues they added a recording limit, like in the original S5, or added the fans. 
Sony would get crap for putting in a recording limit, which is why I imagine they don't do it, but at least it'd be honest. At least then people would know how long they could record consistently. 

I think there probably is something to sensor size being a contributing factor to overheating, but I don't think it's THE factor. I think it's the processing and overall body design. I mean, up until the S1H, GH6 and the S5II/X, Panasonic have been able to do it in both M43 and full frame without a fan. It really might boil down to Panasonic having superior processing (not just power, but more efficient coding) and body design. Once that wasn't enough to handle heating issues they added a recording limit, like in the original S5, or added the fans. 
Sony would get crap for putting in a recording limit, which is why I imagine they don't do it, but at least it'd be honest. At least then people would know how long they could record consistently. 

I mean not all brands have overheating issues, so... 😉

Imagine the reaction if Canon was releasing these cameras. You'd have your Canon apologists, of course, but man, Canon would be getting torn to shreds in Facebook groups, forums, and on YouTube (and rightfully so!). Sony though... not much of a peep from the usual crowd.

Real pros film with laser precision anyway. If you need more than 3.5 seconds of footage the problem ain't the camera, bro, it's you! 

The thing I find funniest is that people seem to think shooting long clips = watching long clips.
It's like they've never heard of editing.

I’m going to ask ChatGPT how to achieve this status.

Perfect for the Scandinavian market!

Panasonic (and Sony) both put fans into mirrorless cameras before external fans started to become more and more of a thing. You see, until recently, it seemed as though overheating was becoming a thing of the past. See: why I keep saying it feels like we're going backwards. 
People's purchasing decisions impact all of us. So yeah, I do care that people keep supporting this nonsense. You give these camera companies an inch and they'll take a mile. Only when you hold them accountable and force their hand do they start to improve. You need only look at Canon trying harder after the R5 debacle to see evidence of that.
What we've seen from Sony is that their overheating issues have gotten worse despite showing that they are more than capable of doing what is necessary to prevent it, given they did it before. What we're also seeing is an army of influencers and paid shills doing everything they can to downplay it, to the point that now people not only accept overheating but applaud third party manufacturers for creating a solution for a problem that shouldn't fucking exist in the first place!
Maybe you weren't around back then, but there was a time when everyone loathed the 30 minute record limit imposed on these cameras. EVERYONE celebrated when those limits were removed. It was one of the things EVERYONE could agree on, a rarity! Just a few years later and now people defend cameras that can't even record for 30 minutes before shutting down! "Who records that long anyway?!" It's ridiculous and disheartening. 

Panasonic (and Sony) both put fans into mirrorless cameras before external fans started to become more and more of a thing. You see, until recently, it seemed as though overheating was becoming a thing of the past. See: why I keep saying it feels like we're going backwards. 
People's purchasing decisions impact all of us. So yeah, I do care that people keep supporting this nonsense. You give these camera companies an inch and they'll take a mile. Only when you hold them accountable and force their hand do they start to improve. You need only look at Canon trying harder after the R5 debacle to see evidence of that.
What we've seen from Sony is that their overheating issues have gotten worse despite showing that they are more than capable of doing what is necessary to prevent it, given they did it before. What we're also seeing is an army of influencers and paid shills doing everything they can to downplay it, to the point that now people not only accept overheating but applaud third party manufacturers for creating a solution for a problem that shouldn't fucking exist in the first place!
Maybe you weren't around back then, but there was a time when everyone loathed the 30 minute record limit imposed on these cameras. EVERYONE celebrated when those limits were removed. It was one of the things EVERYONE could agree on, a rarity! Just a few years later and now people defend cameras that can't even record for 30 minutes before shutting down! "Who records that long anyway?!" It's ridiculous and disheartening. 

Panasonic (and Sony) both put fans into mirrorless cameras before external fans started to become more and more of a thing. You see, until recently, it seemed as though overheating was becoming a thing of the past. See: why I keep saying it feels like we're going backwards. 
People's purchasing decisions impact all of us. So yeah, I do care that people keep supporting this nonsense. You give these camera companies an inch and they'll take a mile. Only when you hold them accountable and force their hand do they start to improve. You need only look at Canon trying harder after the R5 debacle to see evidence of that.
What we've seen from Sony is that their overheating issues have gotten worse despite showing that they are more than capable of doing what is necessary to prevent it, given they did it before. What we're also seeing is an army of influencers and paid shills doing everything they can to downplay it, to the point that now people not only accept overheating but applaud third party manufacturers for creating a solution for a problem that shouldn't fucking exist in the first place!
Maybe you weren't around back then, but there was a time when everyone loathed the 30 minute record limit imposed on these cameras. EVERYONE celebrated when those limits were removed. It was one of the things EVERYONE could agree on, a rarity! Just a few years later and now people defend cameras that can't even record for 30 minutes before shutting down! "Who records that long anyway?!" It's ridiculous and disheartening. 

That there's no incentive for companies to treat their customers better when people think having to buy an external fan is a reasonable thing to do for a brand new camera. 
I'm not trying to be hard on you, it's just incredibly frustrating. 

It was brought up in another thread that S5II has an internal fan. I concede all other points I’ve said. If they can do it so can all other manufacturers. Agree that this is absurd. 

The thing is, is it really unlikely that an enthusiast or amateur ISN'T going to experience overheating if a camera can't even get 20 minutes at 24p (and presumably, 30p)?
Ultimately he consumer, whether it's a professional or an enthusiast, shouldn't have to worry at all that their brand new camera might shut down because a company refused to spend a little extra putting a fan in the body to prevent it from overheating.
We should be expecting more from these companies, not less.
That's the other thing. We can say the difference is the size of the sensor or the resolution, but Panasonic figured out how to get unlimited 4K recording nearly a decade ago. I've never, ever experienced overheating dating back to my GH3 days. Two weeks ago I was outside in 90+ degree weather with high humidity with my three Lumix S5s and the idea of them overheating didn't even cross my mind. They recorded two 90+ minute takes, with only a brief 10 minute intermission in between the first and second half of the event. 

..the real problem with these is going to be the severe overheating. A7IV already overheats in a full size Alpha body, these will toast faster than white bread.

I had a tip off by a man who should know, that a certain Leica SL3 is coming in March next year, which will be a huge updated based on Panasonic's latest tech, which means we should see an S2H or S1H II whatever it will be called before then, perhaps even this year. The S1 and S1R will get an update too, so not long to wait for some excitement in Panasonic land.
By the way I just noticed that WEX in the UK have an S1H for £1399, which is simply ridiculous.
This was a 4 grand camera when it came out and is Netflix standard!!
It is amazing how the market punishes Panasonic for such a high quality piece of kit.
In fact I felt sorry for it and bought it. Autofocus be damned.
The S2H is sure to have PDAF but will it be an 8K overkill monster and lose some of the low light creaminess that the S1H is well known for? That is the question.

There are obviously lots of definitions of 'professional' but one of the most important things I'd associate with someone being a professional would be the ability to get solid results out of even very modest equipment through applying their knowledge and skill built over years of experience.
Before I transitioned from stills to video I used to love watching those "Pro Photographer Cheap Camera Challenge" videos on Digitalrev with Kai and Lok.  Seeing how the pro photog would take the barbie camera (or whatever other completely ridiculous camera they were given) and take a test shot which looked average, then make 2 or 3 small adjustments and get a shot that really had something to it, it really was something to watch and enjoy, and try to learn something from.

The main problem with overheating is not the max time for recording. Its inconsistency and unpredictability. 

Professional means you earn the money through you skill, you can use whatever gear you want, that how I interpret. Like you don't judge the chef by their cooking gear would you? 
Most people would be hobbyist chef, cause they don't cook to earn money.
How chef cook using their equipment is their choice, all we want is delicous food that come out.
Anyway there are bts wedding video people using just iPhone..I guess they are "professional" if they earn their income that way?

I would have thought that a hobbyist is as likely to shoot long takes in hot conditions as anyone else.  
Pros would do it because they're covering an event, and hobbyists would do it because they haven't yet heard of "shooting for the edit" and so tend to just wave it around indefinitely, potentially with a stream-of-consciousness narration to go along with it.
One of the users who is most likely to want a nice camera with reliable AF is that person that insists on filming everything all the time.  I'm sure we remember these people from the handy-cam days, and human behaviour hasn't changed, and neither has the fact that they're filming the kids swimming in the pool, the family on the beach in Greece, the tour on the boat through the islands of Ha Long Bay, the summer BBQ birthday party, etc etc.

This phone has active cooling fan.

Thickness and bulk is no longer an issue.
Yea, not using this tech looks intentional.

The thing is, is it really unlikely that an enthusiast or amateur ISN'T going to experience overheating if a camera can't even get 20 minutes at 24p (and presumably, 30p)?
Ultimately he consumer, whether it's a professional or an enthusiast, shouldn't have to worry at all that their brand new camera might shut down because a company refused to spend a little extra putting a fan in the body to prevent it from overheating.
We should be expecting more from these companies, not less.
That's the other thing. We can say the difference is the size of the sensor or the resolution, but Panasonic figured out how to get unlimited 4K recording nearly a decade ago. I've never, ever experienced overheating dating back to my GH3 days. Two weeks ago I was outside in 90+ degree weather with high humidity with my three Lumix S5s and the idea of them overheating didn't even cross my mind. They recorded two 90+ minute takes, with only a brief 10 minute intermission in between the first and second half of the event. 

88-90 degrees is only hot if you live in the global north where it snows in the winter.  
The only reason that manufacturers aren't concerned about things like this is they're making cameras for the richest countries, which are all freezing.  The majority of the worlds population live in places where 90 degrees is so mild it's laughable.
My sister lives in Edinburgh, and her summer is like our winter.