The leaks are over. The Sony A7S III is now officially here and it’s $3,498

John Aldred

John Aldred is a photographer with over 25 years of experience in the portrait and commercial worlds. He is based in Scotland and has been an early adopter – and occasional beta tester – of almost every digital imaging technology in that time. As well as his creative visual work, John uses 3D printing, electronics and programming to create his own photography and filmmaking tools and consults for a number of brands across the industry.

You can relax. The leaks, rumours and whispers are over. Sony has now officially announced its new video-focused Sony A7S III mirrorless camera. Of course, with the complete B&H review and German press release leaked, there wasn’t much we didn’t already know about Sony’s new flagship mirrorless camera.

Yet, here we are. Final product photos, final specs, official everything. It shoots 4K 120fps, (finally) 10-bit 4:2:2 internally, it has RAW over HDMI that no device can apparently support yet (although maybe Atomos has something up their sleeve?) it has dual-format dual card slots that are the first to use CFexpress Type A, and there’s a new card reader, too.

Here’s that final B&H hands-on review in 4K, not 720p like the leak.

Optimised for video, the Sony A7S III claims to “raise the bar” for what a full-frame mirrorless camera is capable of. It features a new 12.1-megapixle Exmore R BSI CMOS sensor and a new BIONZ XR image processor for faster performance, improved noise reduction and a wider dynamic range. This “faster performance” means that it can now offer not only 4K video at 120fps but 4K at 60fps with internal 10-bit 4:2:2 recording.

MountSony E
FormatFull-Frame
SensorCMOS
Resolution4240 x 2832 pixels
ISO Range80-192,400 (40-409,600 extended)
Bit-depth16-Bit
Shutter speed1/8000 to 30 sec
Continuous shooting10fps (mechanical shutter), ??fps (electronic shutter)
Focus typeAuto & manual focus
Focus modesContinuous-servo AF (C), direct manual focus (DMF), manual focus (M), single-servo AF (S)
AF points759 phase detection, 425 contrast detection
AF sensitivity-6 to +20 EV
Stabilisation5-axis sensor-shift
Viewfinder9.44m-dot 0.65″ 0.9x OLED EVF
LCD3″ 1.44m-dot articulating (flippy out) touchscreen LCD
Internal video4K 120fps, 4K 60fps (10-bit 4:2:2), 1080p 240fps
External video4K 16-Bit 4K RAW over HDMI
Memory card slots2x dual-format UHS-II SD/CFexpress Type A card slots
ConnectivityWi-Fi, Bluetooth
Dimensions128.9 x 96.9 x 69.7mm (5.07 x 3.81 x 2.74″)
Weight614g (1.35lb) body only

The new sensor of the A7S III also brings improved autofocus, with 759 phase-detection AF points, with subject tracking and real-time Eye AF. When it comes to stills, thanks to the relatively low-resolution 12.1-megapixel sensor, the A7S III is capable of shooting 10fps for up to 1,000 consecutive raw files. 5-axis IBIS offers up to 5.5 stops of stabilisation to help keep them rock steady, too.

As well as 10-bit 4:2:2 internally, the A7S III offers another first in a Sony interchangeable lens mirrorless camera; A flippy-out articulated LCD. This might not seem like a big deal to many, but for those who’d planned to pick up an A7S III anyway, this will be an invaluable feature for those who also vlog, or regularly have their cameras in positions that are difficult to see and don’t use an external monitor.

And that’s still not the only first. The Sony A7S III features dual-format dual card slots. Yes, two slots that can each utilise two different types of memory. It can accept a pair of the UHS-II SD cards we’ve come to know and love over the past few years, but it can also accept CFexpress Type A. And it’s the only camera that does. Sony has announced new 80GB and 160GB CFexpress Type A cards today (they ain’t cheap!) to go along with the new camera, as nobody else makes them yet.

It features all of the usual things we’d expect to see in a mirrorless camera these days, especially one geared towards video, like weather sealing (which seems to have been improved from Sony of old), a full-sized HDMI port, USB 3.2 Gen 1 Type-C that allows you to charge the battery or even power the camera from a power bank, 3.5mm microphone jack as well as internals, built-in WiFi for online sharing and remote control, and there’s apparently a new Ethernet adapter for the Type-C socket for wired remote shooting and tethering.

The Sony claims to not overheat, and the early (and leaked) reviews so far seem to suggest that this might be the case. In the B&H review, they tested for well over an hour at 4K60 with no issues. It will be interesting to see if this is the case in the real-world once it starts getting into peoples hands.

The Sony A7S III is available to pre-order now for $3,498 and begins shipping on September 24th.


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John Aldred

John Aldred

John Aldred is a photographer with over 25 years of experience in the portrait and commercial worlds. He is based in Scotland and has been an early adopter – and occasional beta tester – of almost every digital imaging technology in that time. As well as his creative visual work, John uses 3D printing, electronics and programming to create his own photography and filmmaking tools and consults for a number of brands across the industry.

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4 responses to “The leaks are over. The Sony A7S III is now officially here and it’s $3,498”

  1. Ryan Hartford Avatar

    Interesting camera. Sad some of the things I was excited about were missing. Like no cfexpress b slot. Photo capabilities seem lacking. Good video specs. No overheat, that’s huge. Probably from not down sampling from 8k. Canon created their own problems including 8k. Overall not a hard punch to the R5, but looks like a descent small video capable camera.

    1. Justin Case Avatar

      Lighten up there Ryan. Once CFExpress becomes commonplace and the prices drop, there will undoubtedly be adapters to convert type A to Type B. In fact, there’s no reason why two type B’s shouldn’t fit into a type C adapter. But we’re getting ahead of ourselves.

      This is actually more of a punch in the face (to use the parlance of the moment) for high pixel count cameras and especially smartphones. Personally I can’t live without a smartphone with at least 108 million pixels. Oh, hold on, I’ve just checked and my iPhone 6 has only got about 50 pixels. Oh well.

      1. Justin Case Avatar

        On reflection, just a word about CFExpress type A becoming commonplace: Remember Minidisc? Well it was me that bought Minidisc from Sony. That’s right. I’m the one. I went Minidisc crazy. I had it in my car and in my home sound system. Not just the player but also the recorder. I went LARGE.

        It was humiliating, tip-toeing out in the middle of the night so that my neighbours wouldn’t see me, Minidisc in a sack and doing a drive-by fly-tip in somebody’s rubbish skip (that’s a dumpster if you’re American). So perhaps don’t invest too heavily in Type A cards just yet.

        You won’t catch me twice Sony, d-yer hear me?!! You there? YOU WON’T CATCH ME TWICE!!!!!

  2. Peter Adebimpe Avatar

    As for me the a7s III totally punches the R5 n R6 in the face.. what’s the essence of overkill specs that’s not even usable with peace of mind..lol Sony is here to stay.. officially a Sony fanboy?