If It Wants to Beat the Canon r5 and r6, the Sony a7s III Just Needs to Shoot 4k 60p Without Overheating

If It Wants to Beat the Canon r5 and r6, the Sony a7s III Just Needs to Shoot 4k 60p Without Overheating

The phenomenal video features of the Canon EOS R5 are mind-blowing, so how can the soon-to-be-announced Sony a7S III possibly compete? The answer might be simple: shoot 4K 60p — or even 4K 30p — without overheating.

The R5 is yet to fall under proper scrutiny and be tested in the field by filmmakers who want to make the most of these incredible specifications making it hard to know just how good this camera is, despite the insane features. One major revelation has come to light, however: according to details unveiled on EOSHD, there will be some serious limitations when it comes to cranking up the video resolution.

Unearthed from among information supplied by Canon to one of its suppliers, there is a recording time limit of 20 minutes for those wishing to shoot in 8K due to overheating. 4K doesn’t fare much better: 4K 30p oversampled is restricted to 30 minutes, and if you want to shoot 4K 60p without a crop, you get up to 35 minutes (although that will mean shooting for 29 minutes and 59 seconds before hitting record again for another 5 minutes and 1 second). All of the chat suggests that if you want to shoot 4K without melting anything, you’ll need to shoot lineskipped 4K, and as Tony and Chelsea Northrup pointed out, the lack of actual reviews means that it might soon emerge that the rolling shutter is terrible.

The R5 has no mechanism to cool it down and both 8K and 4K place a lot of demands on the processor, producing a lot heat that threatens the integrity of the camera if it’s allowed to go beyond a certain level. In addition, Canon is sticking with the 29 minute 59-second record limit that’s a result of some odd taxes imposed on cinema cameras in Europe.

So where does this place the long-awaited Sony a7S III? Expected sometime in the next month (we assume), details are scant and Sony seems to have done a good job of keeping a lid on the specifications. That said, Sony Alpha Rumors is reporting something that should be of interest to filmmakers: there will be no recording time limits — neither as a result of overheating nor for tax purposes.

“But that’s ok,” you might think, “if overheating is a problem, maybe the R6 is a better option.” Unfortunately, it seems that the smaller sensor in the R6 doesn’t mitigate the heat problems and the 4K modes will be subject to very similar limitations:

While Canon is grabbing the headlines with the R5 and R6, Sony will steal some of them back with a7S III if it has found a means of overcoming the build up of heat that arises due to shooting such high resolution video in such a small unit. As mentioned in the video above, for shooters who are documenting a live event, sure, they might not need to shoot continuously for more than 20 or 30 minutes, but over the course of an hour, you might be filming intermittently, still building up heat, and the camera will not necessarily cool down sufficiently, especially if it’s in your hands between shots. The possibility that the camera suddenly decides that it’s too hot is not a pleasant prospect.

As a result, we might not see the exodus from Sony back to Canon that many are predicting, and this makes me even more intrigued to find out what Sony is planning. Is a 12-megapixel camera still viable in 2020? Will it shoot 4K 120p internally? Will Sony be aggressive with the pricing in order to make it more appealing than the R6? As usual, leave your thought in the comments below.

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Wilder Berry's picture

Pre-ordered R5. Suits me perfectly. So excited for a hybrid device that has amazing capabilities and less compromises for somebody that shoots both stills and video. The true artist sees creative possibilities.... This whole "clickbait' Canon vs Sony vs Panasonic is terribly pointless. Well done for adding to it.

Wilder Berry's picture

I'm not sure why that is relevant. My Sony A7sii used to overheat. So I simply used it in within the boundaries of what it could do and where it was the most appropriate tool for the job. It's really not that difficult.

Dale Karnegie's picture

gotta admit that made me laugh!

Cool Cat's picture

Your bio shows you are a Director, so you must know even big film studios don't continually shoot for long periods. So it doesn't make any difference if it overheats after 20 minutes. Or have you forgotten? Movie scripts are written with structure, then shot. Then the movie set is rearrange with lots of short breaks in-between. So again, it doesn't make any difference.

David Pavlich's picture

I don't shoot any video, so all the hand wringing is wasted on me. I'm looking forward to seeing how these new bodies do with the stills side of the equation. However, I know that the vast majority of the press will be focused on the camera overheating. Doesn't matter if it takes magnificent stills. There's a lot of purpose built video cameras out there if video is that important.

Besides, the other elephant in the room is processing 8K videos. Run of the mill computers ain't gonna' cut it.

Deleted Account's picture

I do not recall Mr Pavlich stating or implying his intention to purchase it.

Robert Nurse's picture

Well, he did say he was "looking forward to seeing how these new bodies do with the stills side of the equation". That suggests a purchase, maybe? But, Love's point is kind of moot seeing that video is part of the DSLR equation across the board. There are a lot of photographers (me included) that don't shoot video.

Adil Alsuhaim's picture

8K is not why the R5 is expensive. Panasonic S1R is $3700, and it doesn't shoot 8K. I think the Sony A7R IV sells for about $3500, and it doesn't even do 4K/60 or 10-bit video. That's what these cameras sell for. These cameras are primarily for stills, and they're good at it.

Michael Clark's picture

Canon EOS 5D Mark III in 2012: $3,499 at introduction ($3,907.43 in 2020 w/ inflation).
Canon EOS 5D Mark IV in 2016: $3,499 at introduction ($3,737.90 in 2020 w/inflation).
Canon EOS R5 in 2020: $3,899 at introduction.

Now tell us all again how 8K is why the EOS R5 is so expensive?

Yin Ze's picture

David Glove, get a life. BMPCC has way too many issues beyond the spec sheet. I shoot Sony and am considering purchasing the Canon r5 for the video capabilities. I buy gear that quickly pays for itself and this is one of those pieces of gear that i am confident will pay off easily.

Yin Ze's picture

David Glove, you are the resident sad sack so please take your budget bmpcc 6k and go play somewhere else. apart from those other issues you mentioned there is crappy battery life, ugly body, puny sensor, unstable software interface, crappy af for times you need it, crappy rear display... i can't afford to go on as I have another paid shoot to prep for.

Yin Ze's picture

you are Penny wise and pound foolish with your unstable bmpcc suggestion. having the limitations of the BMPCC affect a shoot would end up costing you way more money.

Yin Ze's picture

lol, ok mr hollywood. you are ze moron. you apparently stopped reading at the "crappy af" part and not the rest of ze setence "for times you need it". admit it...that camera is straight up fugly. as steve jobs once said about pocket cameras... " if you see a Vmount battery, they blew it." hope you don't sprain a muscle with that huge rig on your steadicam smoothee.

Yin Ze's picture

Hi Mr. Hollyweird, Red and Arri are in a different weight class. I am aware they do not have AF because most movies shot with those cameras have what is known as a focus puller (look it up). BMCC is a joke and hope it doesn't reboot like Windows 98 during an important shoot. You gotta be really high 20 iq if you think anyone on these forum thinks Hollywood movies are shot with Sony AF. You may not need AF so that's why you have poor man's Alexa. Keep saving and get a real camera or perhaps trade up to a7siii.

Yin Ze's picture

did you put up that craigslist ad for focus puller, yet? how many times did your bmcc crash today?

Christian Durand's picture

Get a video camera !!

Daniel Lee's picture

Couldn't agree more!

Newbie Nubes's picture

Not even going to read this trash. The headline is tabloid garbage. AKA click bait. Seriously. There's dozens of articles like this that are created based on what? Pre-production models that a handful got to test? Did you test it? Btw, I'm not brand loyal and am testing new products but your bs content won't steer me any direction.

I used to read this blog. No longer. You're as legit as MSM news channels.

Edison Wrzosek's picture

Sorry, but compare the Canon EOS R5 vs the Panasonic S1H, where the S1H addressed this cooling issue by adding active cooling, Canon did not, this is a design flaw which drastically hinders it for video, which is what Canon is touting up in the media.

This article and the headline is legit, if the A7SIII can do 4K60 without time limits or overheating, then it destroys the R5 already.

Michael Laing's picture

The R5 is a photographic camera that does video. The Panasonic S1H and a7sIII are a mishmash of video camera with a mirrorless camera body (which I felt was always a bit stupid). Video comes first, with photography second (a very distant second if the A7SIII is still 12mp sensor).

You buy the R5 for the same reason you buy the Nikkor D850, the Z7 the S1R and the A7RIV because it has a full frame sensor with 45mp and exceptional AF.

It is a photographic camera that does video, Canon have lots of very good cine line cameras, if you just want video.

Edison Wrzosek's picture

Whilst what you said is mostly correct and I agree with you, I still gave you a thumbs down for your post for one simple reason...

Most of Canon's marketing, and thus vendor advertising for the R5, are focussing HEAVILY on the 8K video capabilities of the camera, and not the, now average, 45MP still image capabilities of the R5.

You are correct that the R5 is primarily a stills camera first, as are most DSLR and MILC cameras (whether APS-C or FF), however Canon's marketing is leaning on the video portion more than the stills, as are most YouTuber's trumpeting the virtues of the R5, since this is a much splashier hype machine for them.

And the R6, well, 20MP in 2020 on a mirrorless camera? Really?

2014 called, and wants its sensor back...

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